Cover Up Rule for Partial Fractions

In MF15 and MF26, we are given the partial fractions decomposition for

• Non-repeated linear factors
• Repeated linear factors
• Non-repeated quadratic factor

It is useful to work with partial fractions especially when we do integration.

I have given 3 examples on how and when we use cover up rule (CUR). It acts like a shortcut to comparing coefficients. However, please note when CUR works and when we have to stick to our old good method of comparing coefficients.