Find the derivatives of :

 

1. log x/10

 

2. e^(ax+b)

 

3. e^(x/3)

The following rules might help you:

log(a/b) = log(a) - log(b),

e^(a+b) = e^a * e^b,

e^(a*b) = (e^a)^b = (e^b)^a.

 

Other than that (and for future forum usage): Please don't simply state your homework questions and hope someone will give you the answer. Do at least give your ideas of how you think it could be done or why you think that all ways you can think of will probably not work. Ideally, you'd also show your previous attempts to solve the problem.

[math]\log \frac{x}{10}[/math] can be adjusted some. Expand it out as Atheist suggested and convert the logarithm to a natural logarithm (unless you're already using base e). You should be able to do it with the chain rule from there.

THanks guys...for the help......i may post some other questions ....coz i need to get prepared for examx