yr11

I've been trying to memorise further reflections for a while ( |f(x)|, f(|x|), |y| = f(|x|) etc.) but they're so confusing and similar to each other, does anyone have any tips to memorise them?

pls help with the following qs (idk where to even start) 1. How many selections of at least one object can be made from n distinct objects? 2. Recall that a digit sum of a number n is the value obtained when the digits of n are added together. For example, the digit sum of...

Hi so my subject selections are due in soon... and I'm still undecided on my final one or two subjects. The ones I've mostly decided on so far are: 3u Maths English Advanced Physics Chem And I wanted to have 13 units for year 11 as I don't know how I'll like the rest of my subjects. Some...