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cd246
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Homework Statement
1. Sin^2(t) The answer states sin2t
2. (e^2x)(sin x-cos x) The answer states (e^2x)(3 sin x- cos x)
3. sec^2(x)-tan^2(x)+cos(x) The answer states -sin x
Homework Equations
1.product rule
2.product rule
3. sum and diff. rule?
The Attempt at a Solution
1. (sin t)(sin t)'+(sin t)(sin t)'=(sin t)(cos t)+(sin t)(cos t)=2cos (t) sin (t)
2. (e^2x)(cos x+sin x)+ (e^2x)(sin x-cos x)=(e^2x)(sin 2x)
3. (sec^2(x)*tan^2(x))-sec^4(x)-sin x. I just don't know how to get rid of the first and second functions.