calculus

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Which of the following are antiderivatives of f(x)=sinxcosx?
I f(x)=(sin^2* x)/2
II f(x)=(cos^2* x)/2
III f(x)=-cos(2x)/4

  • calculus -

    Why don't you in your head take the derivate of the answers?

    d sin^2 x/2= 1/2 sinx cosx * 2

  • calculus -

    1 and 3

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