How to evaluate a logarithm

Please add vertical zoom (stretch) to the graph view. I think that this app is really good cause you just type in your question and it'll get it right 100% of the time really good for getting your math work done quick it also shows you step by step.

I would fail the exams if I didn't know about this app, so far every math problem that I took a picture of and has came back the right answer and good results and I am pleased with it of the apps doesn't answer all my questions for me so today I won't be reading this 5 out of five stars.

And I just hope the developers are still working on it because I noticed it can't solve certain math problem yet. So in my view this are few drawbacks this app should improve, otherwise, it's excellent, but it only has American textbooks solved for the most part.