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f(x) = x^3 + 3x^2 + 5. Find f''(x)

f''(x) means that we need to differentiate the function f(x) twice (f'(x) would mean we need to do it once). Differentiation means we multiply the coefficient by the power, and subtract one from the power. S...
FM
Answered by Felix M. • Maths tutor
4305 Views

Work out 2^3 + 4^2

When a number is raised to a power, that means the number is multiplied by itself. The power (the small number) shows how many times we need to multiply the big number by itself. Therefore: 2^3 can be split ...
FM
Answered by Felix M. • Maths tutor
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The line l1 has equation y = −2x + 3. The line l2 is perpendicular to l1 and passes through the point (5, 6). (a) Find an equation for l2 in the form ax + by + c = 0, where a, b and c are integers.

The first thing to look at is l2 and l1 being perpendicular. This means the gradients of the two lines multiplied together = -1 . To determine the gradient a student could differentiate l1 but a slightly qui...
RP
Answered by Roman Paul M. • Maths tutor
17617 Views

“Elizabeth was never in control of her parliaments” Assess the validity of this view.

Although there are several examples that suggest Elizabeth I was sometimes out of control of her parliament, the assessment that she was ‘never’ in control can be questioned. Over the course of her reign she...
MB
Answered by Miriam B. • History tutor
9761 Views

Discuss the extent to which recent changes in monetary policy have impacted upon the UK economy

The recent changes in monetary policy, which is the manipulation of monetary variables such as the Bank of England base rate and the amount of liquidity in commercial and retail banks to influence the level ...
AK
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