Posted by Ifi on Sunday, October 28, 2012 at 9:29am.
What? You managed to do e^xlnx, and can't do this one?
y' = ln4 4^(3x^2) (6x)
ooh! Look, that's the same as ln(4^(6x)) 4^(3x^2)
Looks like d/dx a^u = ln(a^u') a^u
but probably better to leave it as lna a^u u'
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