The most general antiderivative of cosx is sinx
The antiderivative is the opposite of derivatives of functions.
For the trigonometey rato cosx, the serivative is -sinx
For the antiderivative which is the opposite the negative sign will be negated to have;
Antiderivative of cosx = - (-sinx)
Antiderivative of cosx = sinx
Hence the most general antiderivative of cosx is sinx
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