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Thank you that makes a lot of sense. I was just being stupid!

A bunch of flowers is formed using single flowers from five different types: daffodils, tulips, roses, lilies, and petunias. What is the minimum number of flowers in a bunch required to ensure that it contains at least four flowers of any one type? The answer is 16, but I got 21. Not too sure...

I was able to get the right answer by anti deriving. Is there another way to solve it?

If a function has a stationary point at (−1, 2) and f ″(x) = 2x − 4, find f(2). Pls Help!

I thought we had to do this as well

I don't get why we have to use the second derivative. Why can't we use the first derivative, like we would normally do to find the point. Is it because we are finding when the first derivative is increasing as the question says 'increasing most rapidly'

The amount M of certain medicine present in the blood after t hours is given by M = 9t^2 -t^3 for 0 < t < 9. When is the amount of medicine in the blood increasing most rapidly? How do I do this? The answer is t=3. I got it from Baulkham hills past paper.

Thank You so much! That actually makes sense now.

How do I solve this. Help!!!

Thankyou! I get it now!

Where did the 5 come from in '5C2 = 10 ways'.

Thank you so much, that makes sense now!

I need help with these questions, I'm so confused :( 1. The diagram shows a 6 × 4 grid. The aim is to walk from the point A in the top left-hand corner to the point B in the bottom right-hand corner by walking along the black lines either downwards or to the right. A single move is defined as...

Are u talking about year 11 or year 12?

Hi Sir, could I please receive these notes. They would be really helpful. Email: aashka2401@gmail.com