Thread: [SOLVED] Gradient trouble! Oh oh

I am really confused! How would you work out the gradient of a grph when
y=x to the power of -1? Does anyone know how to do that?

Also say I have the gradient rules for x squared x cubed and x to the power of 4

x squared rule = 2x
x cubed rule = 3x squared
x to the power of four rule = 4x cubed.

Would you be able to work x to the power of a from that?

It looks like you are begining calculus.

the gradient of any graph y=x^a is a*x^(a-1)

if this is true you can anser what is the gradient of y=x^(-1)

[x^a is the same as x raised to the power of a]

You should also try to come up with a rule for finding the function given the gradient.