# Monthly Archives: May 2014

# Tricky Logarithm Problem…

Find the exact solution to the equation .

Answer:

# Differentiation Basics

# Ordinary Graph Transformations:

# If f(x)=sinx, f'(x)=cosx Proof

# (a+b)(a-b)=a^2-b^2 (The Real Proof) (Difference Of Two Squares Demystified)

Ever wondered why (a+b)(a-b)=a^2-b^2? The videos below will reveal to you why we accept this fact. Enjoy!

1) Why (a+b)(a+b)=a^2+2ab+b^2

2) Why (a+b)(a-b)=a^2-b^2

# How To Come Up With The Quadratic Formula – From Scratch

Learn how to come up with the quadratic formula from scratch. Watch the video below…

# Simple But Elegant Way To Prove That sin(A+B)=sinAcosB+cosAsinB (Edexcel Proof Simplified)

Learn why sin(A+B)=sinAcosB+cosAsinB with this elegant proof…

**Like this proof? Why not check out this page…**

How to prove that sin(A-B)=sin(A)cos(B)-cos(A)sin(B) geometrically

# How To Come Up With Pythagoras’ Equation

Learn how to come up with Pythagoras’ famous formula – from absolute scratch…

To see the full explanation in writing, please visit the link below:

# Trapezium Rule Formula – Derivation

Find out how to come up with the Trapezium Rule formula from scratch.

1) Derive the formula for the area of trapeziums:

2) Use the area of trapeziums formula to come up with the Trapezium Rule formula:

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