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Finding general antiderivatives 

f(x)=2x+3
	F(x)=x2+3x+c
f’(t)=sint-sqrt(t)
	f(t)=

t1/2...

-cost - 2/3t3/2+c

f(0)=1, f’(x)=-2sinx+3

f(x)=3x cos(2x)