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Recent questions tagged misc
Questions
How many words,with or without meaning,each of 2 vowels and 3 consonants can be formed from the letters of the word DAUGHTER?
cbse
math
class11
bookproblem
ch7
permutations-and-combinations
misc
q1
sec-c
difficult
asked
May 14, 2014
by
sreemathi.v
1
answer
Find $\sin \large\frac{x}{2},$$\cos \large\frac{x}{2}$ and $\tan \large\frac{x}{2}$ when $\cos x=-\large\frac{1}{3}$.$x$ in quadrant III
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q9
sec-c
difficult
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Find $\sin \large\frac{x}{2},$$\cos \large\frac{x}{2}$ and $\tan \large\frac{x}{2}$ when $\tan x=-\large\frac{4}{3}$,$x$ in quadrant II
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q8
sec-c
difficult
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Evaluate $\sin 3x+\sin 2x-\sin x=4\sin x\cos\large\frac{x}{2}$$\cos\large\frac{3x}{2}$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q7
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Prove that $\large\frac{(\sin 7x+\sin 5x)+(\sin 9x+\sin 3x)}{(\cos 7x+\cos 5x)+(\cos 9x+\cos 3x)}$$=\tan 6x$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q6
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Evaluate $\sin x+\sin 3x+\sin 5x+\sin 7x$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q5
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Prove that $(\cos x-\cos y)^2+(\sin x-\sin y)^2=4\sin^2\large\frac{x-y}{2}$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q4
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Evaluate: $(\cos x+\cos y)^2+(\sin x-\sin y)^2$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q3
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Prove that $(\sin 3x+\sin x)\sin x+(\cos 3x-\cos x)\cos x=0$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q2
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Evaluate:$2\cos\large\frac{\pi}{13}$$\cos \large\frac{9\pi}{13}+$$\cos \large\frac{3\pi}{13}$$+\cos \large\frac{5\pi}{13}$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
misc
q1
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x}{\sin^nx}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q30
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x + \sec x)(x-\tan x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q29
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x}{1+\tan x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q28
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x^2 \cos \bigg( \Large\frac{\pi}{4}\bigg)}{\sin x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q27
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{4x+5 \sin x}{3x+7 \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q26
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q25
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q25
asked
Apr 14, 2014
by
thanvigandhi_1
0
answers
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(ax^2+\sin x) (p+q \: \cos x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q24
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x^2+1) \cos x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q23
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $x^4(5 \sin x-3 \cos x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q22
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{\sin (x+a)}{ \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q21
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{a+b \sin x}{c+d \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q20
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\sin^n x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q19
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{\sec x - 1}{\sec x +1}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q18
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{\sin x+\cos x}{\sin x - \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q17
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{\cos x}{1+\sin x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q16
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $ cosec \: x \cot x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q15
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\sin (x+a)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q14
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(ax+b)^n(cx+d)^m$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q13
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(ax+b)^n$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q12
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $4\sqrt x - 2$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q11
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{a}{x^4}-\large\frac{b}{x^2}$$+\cos x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q10
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{px^2+qx+r}{ax+b}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q9
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{ax+b}{px^2+qx+r}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q8
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{1}{ax^2+bx+c}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q7
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{1+\Large\frac{1}{x}}{1-\Large\frac{1}{x}}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q6
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{ax+b}{cx+d}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q5
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(ax+b)(cx+d)^2$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q4
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(px+q) \bigg( \large\frac{r}{x}+s \bigg)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q3
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ): $x+a$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q2
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the given function from first principle : $ \cos \bigg( x - \large\frac{\pi}{8} \bigg)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q1-(iv)
asked
Apr 12, 2014
by
thanvigandhi_1
1
answer
$150$ workers were engaged to finish a job in certain no. of days. $4$ workers dropped out on second day. $4$ more workers dropped out on third day and so on. It took $8$ more days to finish the work. Find the no. of days in which the work was completed.
cbse
class11
ch9
misc
bookproblem
sequences-and-series
sec-c
difficult
q32
math
asked
Apr 11, 2014
by
rvidyagovindarajan_1
1
answer
A manufacturer reckons that the value of a machine which costs him $Rs.15,625$, will depreciate each year by $20\%$. find the estimated value at the end of $5$ years.
cbse
class11
ch9
misc
bookproblem
sequences-and-series
sec-b
easy
q31
math
asked
Apr 11, 2014
by
rvidyagovindarajan_1
1
answer
Find the derivative of the given function from first principle : $ \sin (x+1)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q1-(iii)
asked
Apr 11, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the given function from first principle : $ (-x)^{-1}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q1-(ii)
asked
Apr 11, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following function from the first principle $ -x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q1-(i)
asked
Apr 11, 2014
by
thanvigandhi_1
1
answer
A man deposited $Rs. 10,000$ in a bank at the rate of $5\%$ simple interest annually. Find the amount in $15^{th}$ year since he deposited the amount and also find the total amount after $20$ ears.
cbse
class11
ch9
misc
bookproblem
sequences-and-series
medium
sec-b
math
asked
Apr 10, 2014
by
rvidyagovindarajan_1
1
answer
A person writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with the instruction that they move the chain similarly. Assuming that the chain is not broken, and that it costs 50 paise to mail one letter, find the amount spent on the postage when $8^{th}$ set of letter is mailed.
cbse
class11
ch9
misc
bookproblem
sec-b
easy
q29
sequences-and-series
math
asked
Apr 9, 2014
by
rvidyagovindarajan_1
1
answer
Shamshad Ali buys a scooter for Rs. 22,000. He pays Rs. 4,000 cash and agrees to pay the balance in annual installment of Rs. 1,000 plus 10% interest on the unpaid amount. How much will the scooter costs him?
cbse
class11
ch9
bookproblem
easy
sec-c
misc
q28
math
sequences-and-series
asked
Apr 9, 2014
by
rvidyagovindarajan_1
1
answer
A farmer buys a used tractor for Rs. 12,000. He pays Rs. 6,000 cash and agrees to pay the balance in annual installments of Rs. 500 plus 12% interest on the unpaid amount. How much will the tractor cost him?
cbse
class11
ch9
bookproblem
misc
easy
sec-b
q27
math
sequences-and-series
asked
Apr 8, 2014
by
rvidyagovindarajan_1
1
answer
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