What is the integral of sin(-1)x + cos(-1)x? I know that it equals pi/2 so does that mean that the integral is (pi)x/2? thank you for any help =)
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that identity only holds for $\displaystyle |x|\le1.$
Hello christina Originally Posted by christina What is the integral of sin(-1)x + cos(-1)x? I know that it equals pi/2 so does that mean that the integral is (pi)x/2? thank you for any help =) Yes, give or take a constant of integration, and provided the values of $\displaystyle x$ lie in a suitable range. Grandad
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