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Question
y = `e^(x3)`
Options
`3x^2e^(x3)`
`e^(x2)`
`e^(x3)`
`x^(ex)`
MCQ
Solution
`3x^2e^(x3)`
Explanation:
`y = e^(x3)`, put `x^3 = t`
⇒ `y = e^t` and `t = x^3`
⇒ `(dy)/(dt) = e^t, (dt)/(dx) = 3x^2`
⇒ `(dy)/(dx) = (dy)/(dt) xx (dt)/(dx) = e^t xx 3x^2 = 3x^2e^(x3)`.
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