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IB math Calculus

if f'(x) = cos x and f(pi/2) = - 2, find f(x) - IBO 2000

I dont know how to start it.
If someone can explain me the steps, it would be helpful.
The answer is sinx-3. I need this problem to be explained

thanks in advance :smile:
Original post by sabi06
if f'(x) = cos x and f(pi/2) = - 2, find f(x) - IBO 2000

I dont know how to start it.
If someone can explain me the steps, it would be helpful.
The answer is sinx-3. I need this problem to be explained

thanks in advance :smile:


Since you're given f'(x), then to find f(x) you just integrate.

However, you end up with a constant of integration. And to work out what the constant is you need to use a point on the curve - the one you're given in the question.

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