Finding area of quadrilateral in Vectors
Now, we all know that every single formulas from vectors, or simply turn to that huge mind-map or thick notes we have. The other day, I asked my class the following: All of you know how to find [...]
Now, we all know that every single formulas from vectors, or simply turn to that huge mind-map or thick notes we have. The other day, I asked my class the following: All of you know how to find [...]
Here is some sharing over a very fascinating constant . We know this is (up to 3 sig. fig. accuracy) or even (up to 7 sig. fig. accuracy). One of my favourite way of deriving this never-ending [...]
This is a question from AJC/C2/MY/P1/10. Quite challenging. But once you get the hang of it, you should be capable of solving other variations. Using the formula for , prove the . (i) Hence show [...]
Many parents call me and ask if their A-level kids need H2 Math tuition. Through the years, I’ve seen mainly three types of students: A: Students that are diligent but do not do well, and [...]
This is a question from A-level 1999 Paper 1. A very simple question that tests you if you know your stuffs. 🙂 The term of a series is . Find the sum of the first terms. Ans:
Students always wonder why do we reject the null hypothesis when the p-value is less than the level of significance. To understand how hypothesis testing works, students can read more here. So [...]
All A-level students should know that when you have a non-normal distribution and a sufficiently large sample size n, we can approximate it to a normal distribution. So what happens here? Why is [...]
This is a modified summation question taken from HCI. I think it forces the students to think out of the box, and we all know how scary trigonometry and summation is together. Given , show that [...]
If you missed part 1, you should read that first. Lets look at why r-value is independent of translation and scaling from the mathematical approach. Consider so is a scaling parameter while is a [...]
As we all know, the Ratio Theorem is given in MF15. But some students struggle to fit in the and every time. They will then attempt to draw a bit and see it helps. Here’s a solution for [...]