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int(0)^(pi//4)(x.sinx)/(cos^(3)x) dx equ...

`int_(0)^(pi//4)(x.sinx)/(cos^(3)x)` dx equal to :

A

`(pi)/(4)+1/2`

B

`(pi)/(4)-1/2`

C

`(pi)/(4)`

D

`(pi)/(4)+1`

Text Solution

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The correct Answer is:
B
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RESONANCE-DEFINITE INTEGRATION & ITS APPLICATION -Exercise 1 Part-II
  1. int(lnpi-ln2)^(lnpi) (e^(-x))/(1-cos(2/3e^(x))) dx is equal to

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  2. If I(1)=int(n)^(e^(2))(dx)/(lnx) and I(2) = int(1)^(2)(e^(x))/(x) dx(1...

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  3. int(0)^(pi//4)(x.sinx)/(cos^(3)x) dx equal to :

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  4. The value if definite integral int(3/2)^(9/4)[sqrt(2x-sqrt(5(4x-5)))+s...

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  5. If int(ln2)^(x)(dx)/(sqrt(e^(x)-1))= (pi)/(6), then x is equal to

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  6. int(0)^(oo)(x^(2)+1)/(x^(4)+7x^(2)+1)dx=

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  7. Suppose for every integer n, .int(n)^(n+1) f(x)dx = n^(2). The value o...

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  8. If f(x) and g(x) are continuous functions, then int(In lamda)^(In (1//...

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  9. int- 1^1cot^(- 1)((x+x^3)/(1+x^4))dx

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  10. int(2)^(0){x^(3)+3x^(2)+3x+3+(x+1)cos(x+1)} dx is equal to

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  11. int(-1)^(1)xln(1+e^(x))dx=

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  12. If int(-1)^(3//2)|xsinpix|dx = (k)/(pi^(2)), then the value of k is :

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  13. The value of definite integral int0^(pi^2/4) dx/(1+sin^2 sqrtx+ cos^2 ...

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  14. int(2-ln3)^(3+ln3)(ln(4+x))/(ln(4+x)+ln(9-x))dx is equal to :

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  15. The value of the definite integral l = int(0)^(x)xsqrt(1+|cosx|) dx is...

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  16. The value of int(0)^(pi//2)ln|tanx+cotx| dx is equal to :

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  17. If I1=int0^1(e^x)/(1+x) dxaand I2=int0^1 x^2/(e^(x^3)(2-x^3)) dx then ...

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  18. The value of int(0)^(|x|){x} dx (where [*] and {*} denotes greatest in...

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  19. If int(0)^(11) (11^(x))/(11^([x]))dx = k/(log11), (where [] denotes gr...

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  20. f(x) = int(x)^(x^(2))(e^(t))/(t)dt, then f'(t) is equal to :

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