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September 23, 2014

September 23, 2014

Posted by **steve** on Thursday, February 10, 2011 at 8:16pm.

((1+x^2)^2)sin(2x)

- calc a -
**Reiny**, Thursday, February 10, 2011 at 8:21pmuse the product rule

- calc a -
**steve**, Thursday, February 10, 2011 at 8:35pmi got (1+x^2)^2(2cos(2x)+sin(2x)(4x(1+x^2)

is that right?

- calc a -
**Reiny**, Thursday, February 10, 2011 at 8:41pmyes, correct

you might want to consider factoring it a bit more

(I see 2(1+x^2) as a common factor)

- calc a -
**steve**, Thursday, February 10, 2011 at 9:10pmthanks you so much. that really helped alot

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