Posted by sh on Wednesday, March 24, 2010 at 4:58am.
Find the derivative of
y=cot³(12x)²
y'=3[cot(12x)²]² (csc²(12x)²)(24x)(2)
y'=(6+24x)[cot(12x)²]²(csc²(12x)²)
How do you simplify further?

Calculus  drwls, Wednesday, March 24, 2010 at 8:41am
I believe your last step contains and error. Shouldn't the first parentheses contain (12 +24x) ?
The "2" exponent outside the first bracket could have been written "cot^2"
I don't see any furher simplifications

Calculus  sh, Wednesday, March 24, 2010 at 10:37am
Thanks. The answer key says the 12 is positive.
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