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What is the next number in the sequence? 7 18 29 40 51 ?

First find the difference between the numbers. Do this by subtracting the first number from the second number... 18 -7 11 Double check this to see if this runs true for the whole sequence by adding 11 to 18 ...
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Answered by Kate P. • Maths tutor
9161 Views

A curve is defined for x>0 as y = 9 - 6x^2 - 12x^4 . a) Find dy/dx. b) Hence find the coordinates of any stationary points on the curve and classify them.

a) y = 9 -6x^2 - 12x^4 dy/dx = -12x - 48x^3 b) At stationary points dy/dx = 0. -12x - 48x^3 = 0 48x^3 + 12x = 0 4x^3 + x = 0 x (4x^2 + 1) = 0 Either x = 0 or 4x^2 + 1 = 0 However, 4x^2 + 1 = 0 leads to 4x^2 ...
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Answered by Olivia W. • Maths tutor
3870 Views

What is the coefficient of x^2 in the expansion of (5+2x)^0.5?

We the answer in question in the form A(1+B) 0.5 and we can do that by factorising out the 5. This gives 5 0.5 (1+0.4x) 0.5 . 2. Identify the formula we are going to use and put in the numbers from this equa...
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Answered by Akinmi A. • Maths tutor
4354 Views

Differentiate y=x^(-1/2)-x

The formula you are given is an equation which is written in terms of x. So we will be differentiating with respect to x. When differentiating we take the current power and place that in front of the term. T...
ZT
Answered by Zarin T. • Maths tutor
4218 Views

Find x when 2x-3=5

To find what x is, we must rearrange the equation so that it says x=. To do this we need to get rid of the -3 on the left hand side of the equation. This can be done by adding 3 to both sides of the equation...
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Answered by Rosie C. • Maths tutor
5279 Views