In your case we have .
So you're correct; the online calculator is wrong.
Very quick one this:
I am sure the above is correct, but does:
(Please excuse the wrong sized bracket after the exp function - I can't seem to get it to go the right size in LaTeX)
I am assuming it's but have been given as an answer from an online calculator.
Please help - I'm rubbish at logarithms and need to improve asap due to a home study course coming up!
Use what you did in post 4
Those logarithms will cancel to give
You can take the cube root now and remember that
If you want to use the form in your last post you will get
You can use the laws of exponents to simplify the RHS