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To find the median, we first need to rewrite the set of data in ascending order of values: 2, 16, 16, 34, 43, 43, 55, 62, 91. We then count how many items are in this list. The median is the item in the m...

the determinant is calculated using the formula ad - bc where a,b,c and d are the following positions in the matrix [a   b                                                                                  ...

e.g : 2,4,6,8..

the formula for the sequence can be found by using a+(n-1)d , where a is the first number in the sequence and d is the diffenece between the adjacent numbers in the sequence. so a =...

This could be happening for two reasons.  

Firstly, the negative form of the expression that you are being asked to integrate could be appearing in your answer, after you've used the 'integrating b...

for example 3x²+2x+1 differentiated? axⁿ differentiates to (an)x^n-1 therefore 3x² goes to 6x  2x goes to 2 and 1 goes to 0 so the fina...