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Recent questions in CBSE XI
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CBSE XI
CBSE XI
Math
Physics
Chemistry
Biology
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
If $\;a+ib =\large\frac{(x+i)^{2}}{2x^{2}+1}\;$ , find $\;a^{2} +b^{2}$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
If $\;z_{1}=2-i\;,z_{2}=1+i\;$ find $\;|\large\frac{z_{1}+z_{2}+1}{z_{1}-z_{2}+i}|$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;21x^{2}-28x+10=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;27x^{2}-10x+1=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}-2x+\large\frac{3}{2}=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;3x^{2}-4x+\large\frac{20}{3}=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Convert the following in the polar form : $\;\large\frac{1+3i}{1-2i}$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Convert the following in the polar form : $\;\large\frac{1+7i}{(2-i)^{2}}$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
If $\;x-iy=\sqrt{\large\frac{a-ib}{c-id}}\;$ what is the value of $\;(x^{2}+y^{2})^{2}$?
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-c
asked
Apr 11, 2014
by
yamini.v
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
Reduce $\;(\large\frac{1}{1-4i}- \large\frac{2}{1+i})\;(\large\frac{3 -4i}{5+i})\;$ to the standard form
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-c
asked
Apr 11, 2014
by
yamini.v
1
answer
For any two complex numbers $\;z_{1}\;$ and $\;z_{2}\;$, what is the value of $\; Re(z_{1} z_{2}) $?
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Evaluate : $\;[i^{18} +(\large\frac{1}{i})^{25}]^{3}$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-misc
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}+\large\frac{x}{\sqrt{2}}+1=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}+x+\large\frac{1}{\sqrt{2}}=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;\sqrt{3}x^{2}-\sqrt{2}x+3\sqrt{3}=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
medium
sec-b
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;\sqrt{2}x^{2}+x+\sqrt{2}=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}-x+2=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}+3x+5=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 11, 2014
by
yamini.v
1
answer
Solve the equation : $\;-x^{2}+x-2=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 11, 2014
by
yamini.v
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
Solve the equation : $\;x^{2}+3x+9=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 11, 2014
by
yamini.v
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
Solve the equation : $\;2x^{2}+x+1=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 10, 2014
by
yamini.v
1
answer
Solve the equation : $\;x^{2}+3=0\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-3
easy
sec-a
asked
Apr 10, 2014
by
yamini.v
1
answer
In the expansion of $(1 + a)^{m+n}$, prove that coefficients of $a^m$ and $a^n$ are equal.
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q9
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Find the middle terms in the expansions of $\; \large ( \frac{x}{3}$$+9y \large)$$^{10}$
cl37687
cl37683
cl37679
cl37677
cl37674
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q8
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Find the middle terms in the expansions of $\;\large ($$ 3 $$- \large\frac{x^3}{6})^7$
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q7
sec-b
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Convert the given complex number in polar form :$\;i\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-2
medium
sec-b
asked
Apr 10, 2014
by
yamini.v
1
answer
Find the $13th$ term in the expansion of $\large ($$9x$$-\large \frac{1}{3\sqrt x})^{\normalsize 18}$$, x\neq 0$
cl37679
cl37677
cl37674
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q6
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Find the $4th$ term in the expansion of $(x - 2y)^{12}$.
cl37677
cl37674
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q5
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Write the general term in the expansion of $ (x^2 - yx)^{12},\; x\neq 0$
cl37674
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q4
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Write the general term in the expansion of $ (x^2 - y)^6$
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q3
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Convert the given complex number in polar form :$\;\sqrt{3}+i\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-2
medium
sec-b
asked
Apr 10, 2014
by
yamini.v
1
answer
Find the coefficient of $a^5b^7$ in $ (a-2b)^{12}$
cl37661
cl37655
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q2
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Convert the given complex number in polar form :$\;-3$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-2
medium
sec-b
asked
Apr 10, 2014
by
yamini.v
1
answer
Convert the given complex number in polar form :$\;-1-i\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-2
medium
sec-b
asked
Apr 10, 2014
by
yamini.v
1
answer
Find the coefficient of $x^5$ in $(x+3)^8$
binomial-theorem
cbse
class11
math
ch8
exercise8-2
sec3
general-and-middle-terms
q1
sec-a
easy
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Convert the given complex number in polar form :$\;-1+i\;$
math
cbse
class11
ch5
complex-numbers-and-quadratic-equations
exercise5-2
medium
sec-b
asked
Apr 10, 2014
by
yamini.v
1
answer
Show that $9^{n+1} – 8n – 9$ is divisible by $64$, whenever $n$ is a positive integer.
binomial-theorem
cbse
class11
math
ch8
exercise8-1
sec2
binomial-theorem-for-positive-integral-indices
q12
sec-b
medium
asked
Apr 10, 2014
by
balaji.thirumalai
1
answer
Find the derivative of the given function $ 2\tan x - 7 \sec x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
derivatives
exercise13-2
p312-313
q11-(vii)
asked
Apr 10, 2014
by
thanvigandhi_1
1
answer
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