MilkDrinker
Member
- Joined
- Jan 26, 2012
- Messages
- 137
- Gender
- Female
- HSC
- 2013
Hi guys, I need help understanding the solution to a question.
This was a former HSC question, I don't understand one aspect of the solutions.
QUestion: If
, find y' when x=1
Answers:
=\frac{d}{dx}(x ln 10)\\\mathbf{\frac{1}{y} \\\frac{dy}{dx}=ln 10}\\\frac{dy}{dx}=yln10= 10^x ln 10\\\therefore at x=1, \frac{dy}{dx}=10ln10
)
I dont understand the line in bold.
where did the dy/dx come from
please ignore the random <br/> through it
please explain. Thanks
This was a former HSC question, I don't understand one aspect of the solutions.
QUestion: If
Answers:
I dont understand the line in bold.
where did the dy/dx come from
please ignore the random <br/> through it
please explain. Thanks