Need help. According to the example in my book I got f ' (x)= (ln(4))(4^(7x^2))(14x) but that doesn't seem to be right. Can someone help?

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## Answers (1)

y = 4^(7x^(2))

lny = 7x^2 ln4

y' = y14xln4 = 4^(7x^(2)) (14xln4)