Question

What is the value of e^in7x?
1
7e
7x
7

Answer 1

`7x`

Explanation:

`\text{Let,}~~\\\\~~~~~~~y = e^(\ln 7x)\\\\\implies \ln y = \ln \left(e^(\ln 7x) \right)\\\\\implies \ln y = \ln (7x) \ln e\\\\\implies \ln y = \ln (7x)\\\\\implies y = 7x\\\\\implies e^(\ln 7x) = 7x`