stottrupbailey
If f(t)=8sec^2t-7t^2, find the antiderivative F(t). Then, if F(0)=0, find what F(1.2) would equal
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stottrupbailey
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So for my antiderivative I got, \[8\tan(t)-\frac{ 7 }{ 3 }t^3+C\]
stottrupbailey
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but for some reason I'm not getting the right answer for F(1.2)
stottrupbailey
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I found that since F(0)=0, then that must mean C=0. And then I pluged in 1.2 for the t's in the antiderivative and got -4.032 but the webwork says my answer's wrong, so I'm confused
stottrupbailey
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are you still there Mark?
mark_o.
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yeah seems you did good
but in you calculator did you set up in radian mode
mark_o.
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did you get
-15.45 ?
stottrupbailey
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yes, I did. So I'm not sure what the issue is. No, I didn't get that. I got -4. something
stottrupbailey
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I typed your answer in and it said it's wrong
mark_o.
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im sorry its 15.45
stottrupbailey
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Yeah, that worked. Thanks!
mark_o.
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ok yw, have fun :D