Search over 10,000 free study notes

Using the "FOIL" Technique should help with the expansion, telling you what order to multiply things together. F stands for "firsts", so the first step is to multiply the first things ...

You would first of all establish which differentiation rule is required, for this question it would be useful to use the product rule splitting xcos(x) into x multiplied by cos(x). We can label u = x and ...

Question: There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.Answer: total mar...

x= 9/2y= -3/2

claw technique: multiply each 'thing' in the first bracket with each 'thing' in the second bracket.2m² + 2m - 3m -3then collect the like terms2m² -1 -3