ericatrang
if y=sin^2x+cos^2x, determine d^2y/dx^2



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baldymcgee6
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ericatrang
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would that equal 0?

baldymcgee6
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How does that equal zero? can you show some work?

ericatrang
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baldymcgee6
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ericatrang
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Thank you, I learned that when there's cos it automatically becomes sin and skipped the power. This did help though.

baldymcgee6
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you're welcome..