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Solve the simultaneous equation: 2x + y = 18 and x−y=6

Check to see if the number in front (coefficient) of either the x's or y's is the same. In this case both the y's have the same coefficient so we do not need to make them the same.We are going to add the par...
CK
Answered by Chelsea K. • Maths tutor
5134 Views

Find the stationary points of the function f(x) = x^3+6x^2+2 and determine if they are local maximums or minimums.

A stationary point is defined as a point on the function where the gradient is zero, i.e f'(x) = 0 . To construct this equation we must differentiate the function, we would find f'(x) = 3x 2 +12x . The corre...
LS
Answered by Luke S. • Maths tutor
5808 Views

Is it true that once we reach adulthood we never produce new neurons?

The short answer is no, this is a false statemement. There are two areas in the brain which undergo adult neurogenesis after adolescence. These is the subventricular zone of the lateral ventricles, which sup...
EB
Answered by Ebrahim B. • Biology tutor
3237 Views

To what extent was the Royalist defeat in the English Civil War due to Charles I's weak leadership?

When trying to answer a 45 mark A2 level question it is crucial to establish your argument from the outset, so that it remains clear throughout your essay. For this question the student is being asked to exa...
KM
Answered by Katy M. • History tutor
9453 Views

How do I revise for the HAT test?

Revision may seem counterintuitive, especially because you won't be given any prior information about what sort of source may come up but it is still worth preparing for the HAT test.Due to changes in the st...
MI
Answered by Mohamed I. • HAT tutor
3083 Views