Search over 10,000 free study notes

y = 4x^3 + 7 x Recall: to differentiate any function of the form y = x^n dy/dx = y' = n x^(n-1) Hence if y = 4x^3 + 7x dy/dx = 4 ( 3x^3 -1) + 7x^(1-1) = 12 x^2 + 7

First of all look at the question: make sure you understand all the key words and that you know exactly what you are being asked. Then 1) give a definition of how you understand these key words 2) take a sta...

To answer this question, it is first important to understand the meaning of the word degenerate. So being an A level Biology student, you must know that genes code for amino acids . (these are the basic comp...

For example: 5x +25 In order to factorise we need to find a common factor for both '5x' and '25'. This factor gets taken outside of the brackets. For this example the common factor is 5. Because you can divi...

Recall: We treat inequality in a similar manner to the equal sign. The steps are: 1. Collect like terms 2. Simplify 3x – 7 > 3 – x step 1 : 3x + x > 3+7 step 2: 4x > 10 4x/4 > 10/4 x > 2.5