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Which of the following functions is decr...

Which of the following functions is decreasing on `(0,pi/2)`?

A

sin 2x

B

tan x

C

cos x

D

cos 3x

Text Solution

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The correct Answer is:
C
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VMC MODULES ENGLISH-DIFFERENTIAL CALCULUS 2-JEE Advanced (Archive)
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  7. If the line a x+b y+c=0 is a normal to the curve x y=1, then a >0,b >...

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  8. If the function g:(-oo,oo)rarr(-(pi)/(2),(pi)/(2)) is given by g(u)=...

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  10. The length of the longest interval in which the function 3sinx-4sin^3x...

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  11. If f(x)=xe^(x(1-x)), then f'(x) is

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  12. The function f(x)=sin^4x+cos^4x increasing if 0<x<pi/8 (b) pi/4<x<(3p...

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  13. If f(x)=x/(sinx) \ a n d \ g(x)=x/(tanx),w h e r e \ 0ltxlt=1, then in...

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  14. The function f(x)=(log (pi+x))/(log (e+x))," is "

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  16. Let f:(0,oo) in R be given f(x)=overset(x)underset(1//x)int e^(t+(1)...

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