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Need a hint for this question, not quite sure how to start: Thanks!

I quoted a property of Pascal's Triangle in my exam: The sum of the coefficients in the nth row is always 2^n. I did this without proving it. The proof was extremely easy (only a 2 mark question) even without the use of this property, not sure why I did it this way. Would you take off a...

If you could refer to the screenshot. Working through the given example, I don't understand the last line, namely, how "replacing y by x" eradicated the logarithm evident in the previous line, as well as how the given result equals e^x. If anyone can just break the last line down a bit further...

Are they sophisticated enough? Or are they a no-no like songs?

Hey guys, I've been interested in 4U math from Dr. Du, but apparently they have already completed up to conics? WTF. Can anyone that is a student of his vouch for this? If I'm behind am I screwed? I'm willing to catch up but idk. That kinda shifted me towards Harry's since I haven't...

Hey guys, few questions: 1)How do you actually set out to learn whole topics independently? Sometimes textbook explanations can be a bit insufficient to attempt the exercises efficiently. 2) When do you typically jump into past paper questions? Only when you've finished a whole topic...