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Recent questions tagged q17
Questions
A five digit number divisible by 3 is to be formed using the numerals 0,1,2,3,4 and 5 without repetition.The total number of ways this can be done is
cbse
math
class11
ch7
permutations-and-combinations
additionalproblem
q17
sec-b
medium
asked
May 20, 2014
by
sreemathi.v
1
answer
If 20 lines are drawn in a plane such that no two of them are parallel and no three are concurrent,in how many points will they intersect each other
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q17
sec-b
medium
asked
May 15, 2014
by
sreemathi.v
1
answer
In the triangle ABC with vertices A(2,3), B(4,-1) and C(1,2), find the equation and length of altitude from the vertex A.
cbse
class11
ch10
straight-lines
bookproblem
exercise10-3
sec-c
q17
medium
asked
May 14, 2014
by
thanvigandhi_1
1
answer
A sequence $a_1, a_2, a_3...$ is defined by letting $a_1=3$ and $a_k=7a_{k-1}$ for all natural numbers $k \geq 2$. Show that $a_n = 3.7^{n-1}$ for all natural numbers by using principle of mathematical induction.
cbse
class11
ch4
mathematical-induction
exemplar
q17
asked
May 6, 2014
by
thanvigandhi_1
0
answers
Prove the following by using the principle of mathematical induction for all $n \in N$ \[\] $ \large\frac{1}{3.5}$$+\large\frac{1}{5.7}$$+\large\frac{1}{7.9}$$+...+\large\frac{1}{(2n+1)(2n+3)}$$=\large\frac{n}{3(2n+3)}$
cbse
class11
ch4
mathematical-induction
bookproblem
sec3
exercise-4.1
q17
asked
Apr 30, 2014
by
thanvigandhi_1
1
answer
If $\cot\theta+\tan\theta=2cosec \theta$,then find the general value of $\theta$
cbse
math
class11
ch3
trigonometric-functions
exemplar
q17
sec-b
medium
asked
Apr 18, 2014
by
sreemathi.v
1
answer
Prove :$\large\frac{\sin 5x+\sin 3x}{\cos 5x+\cos 3x}$$=\tan 4x$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-3
q17
sec-b
medium
asked
Apr 17, 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 ) $\large\frac{\sin x+\cos x}{\sin x - \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q17
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
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