Top answers

How do you find the gradient of a straight line?

The gradient of a straight line is the number before the x if it is in the form y=mx+c. So for y=6x+2 the gradient is 6. If the y has a factor, like 2y=6x+2, then you have to divide everything by the factor ...
HW
Answered by Hebe W. • Maths tutor
27175 Views

How do you determine the nature of a graphs stationary point? e.g y = 1+2x-x^2

We have our function of y = 1+2x-x 2 The gradient of a stationary (or turning) point is 0, in essence a peak or a trough. In order to determine the gradient, we need to differentiate our function with respec...
JA
Answered by Joseph A. • Maths tutor
12430 Views

Show that 12 cos 30° -2 tan 60° can be written in the form square root k where k is an integer.

FIrst of all we need to understand how cos 30° and tan 60° are found. Let's think of an equilateral triangle, all three angles of the triangle are equal and 60° and each side has length 2. Let's half the tri...
AC
Answered by Asia-Marie C. • Maths tutor
12686 Views

What is the equation for calculating the surface area of a cylinder?

= 2πr 2 + πd x height (= area of the 2 circle at either end + area of rectangular surface around the cylinder)
YC
Answered by Young C. • Maths tutor
4073 Views

How do I integrate 2^x?

Let's first consider the differential of 2 x . We know that this becomes ln(2)*2 x . We can compare this to the integrand and see that this is very close indeed! The only problem is that ln(2) . So now consi...
JH
Answered by Jordan H. • Maths tutor
97186 Views