what is derivative of cos^2 pi * t?

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2007-07-22 12:19:25 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

-2*pi*tsin (pi*t)

2007-07-22 12:25:35 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

You have to use the chain rule so in this case it would be

-2*sin^(2 * pi *t)

2007-07-22 19:35:45 · answer #2 · answered by ishi93 3 · 0⤊ 0⤋

Find the derivative of cosÂ²(Ït).

Use the chain rule.

d[cosÂ²(Ït)]/dt = 2 [cos(Ït)] [-sin(Ït)] Ï

d[cosÂ²(Ït)]/dt = -2Ï [cos(Ït)] [sin(Ït)]

2007-07-22 19:49:42 · answer #3 · answered by Northstar 7 · 0⤊ 0⤋