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evaluate the integral 2x/((9+x^2)^1/2) between -2 and 0

One approach would be to use integration by parts, as we have two functions of x within the integral. This approach would get you to the answer but would be more difficult and convoluted than necessary. O...

AF
Answered by Aiden F. Maths tutor
3639 Views

Express (X²-16)/(X-1)(X+3) in partial fractions

(X2-16)/(X-1)(X+3) can be expressed as partial fractions as it is equivalent to A + B/(X-1) + C/(X+3) giving us : (X2-16)/(X-1)(X+3)≡ A + B/(X-1) +C/X+3). By multiplying both sides o...

SP
2384 Views

What are Newton's Laws of Motion?

Newtons First Law:An object at rest will stay at rest, and an object in motion will stay in constant motion unless acted upon by a resultant force
Newtons Second Law:F=ma
Newtons Third Law:If o...

HA
Answered by Husein A. Physics tutor
1900 Views

Expand the brackets (x-3)(x+4)

When dealing with questions to do with expanding brackets, you must multiply every term in one bracket with all the others in the second bracket. So for this question, we can see we have 4 terms

AA
Answered by Ameer A. Maths tutor
5405 Views

Solve these simultaneous equations. 2x + y = 18 x - y = 6

With simultaneous equations there is more than one unknown. First we’ll get one unknown on its own so we rearrange the bottom equation to get x on its own. By adding y to each side of the equation this le...

LS
Answered by Lizzie S. Maths tutor
5741 Views

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