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int(- pi/4)^(pi/4) cos^(-4) x dx=...

`int_(- pi/4)^(pi/4) cos^(-4) x dx=`

A

` - 8/3`

B

`8/3`

C

`- 3/8`

D

`3/8`

Text Solution

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The correct Answer is:
B
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Find the values of the following integrals (i) int_(0)^(pi/2) sin^(4) x cos^(4) x dx

AAKASH SERIES-DEFINITE INTEGRALS-EXERCISE - II
  1. int(-3pi//2)^(-pi//2)[(x+pi)^(3)+cos^(2)(x+3pi)]dx=

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  2. int(-pi//2)^(pi//2)cos^(3)theta(1+sin theta)^(2)d theta=

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  3. int(- pi/4)^(pi/4) cos^(-4) x dx=

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  4. int(ln lambda)^(ln(1/lambda))(f(x^(2)/3)(f(x)+f(-x)))/(g(3x^(2))(g(x)-...

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  5. int(-1)^(1)(1)/((1+x^(2))^(2))dx=

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  6. f(x)= int(0)^(x) ln ((1-t)/(1+t))dt rArr

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  7. int(0)^(a) (f(x)+f(-x))dx=

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  8. int(-1)^(3)(Tan^(-1)""(x)/((x^(2)+1))+Tan^(-1)""(x^(2)+1)/(x))dx=

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  9. int(0)^(sin^(2)x) sin^(-1) sqrt(t) dt + int(0)^(cos^(2)x) cos^(-1) sqr...

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  10. int(0)^(1) cot^(-1) (1-x+x^(2))dx=

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  11. If for every ineger n , int(n)^(n+1) f(x) dx=n^(2) then the value of i...

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  12. If f(x)={{:(x^(2) " for " 0 le x le 1),(sqrt(x) " for "1 le x le 2):}...

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  13. If int(-3)^(2) f(x)dx= 7/3 and int(-3)^(9) f(x)dx= - 5/6 then int(2)^(...

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  14. If int(-1)^(4)f(x)dx=4andint(2)^(4)[3-f(x)]dx=7" then "int(-1)^(2)f(x)...

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  15. The value of the integral int(0)^(oo)(xlogx)/((1+x^(2))^(2))dx is

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  16. int(0)^(pi//2) (sin^(100)x-cos^(100)x)dx=

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  17. For m, n in N and m != n then the value of int(0)^(pi) sin m x " " sin...

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  18. For n in N, the value of int(0)^(pi) sin^(n) x*cos^(2n-1)x dx is

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  19. For n in N, int(0)^(2pi) (x sin^(2n)x)/(sin^(2n) x + cos^(2n) x) dx=

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  20. int(0)(pi//2) ( x dx)/(Sin x + Cos x)=

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