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Need help with maths

Matheen1

Reply 1

Muttley79

Original post by Matheen1

How far have you got?

Reply 2

Matheen1

Original post by Muttley79

How far have you got?

I think I’ve found the two tangents

Reply 3

Parinoor

Original post by Matheen1

1. differentiate equation
2. equate the differentiated equation to 4 as u wanna find the x coordinates for the gradient (if that makes sense?)
3. then once u have your x coordinates sub these into original equation
4. now u must have a gradient (of 4) and 2 coordinates and form te equations

Reply 4

Muttley79

Original post by Matheen1

I think I’ve found the two tangents

The first three lines are correct but when you put dy/dx = 4 you need to collect the '4' on the right to get a quadratic = 0. Only then can you solve ...

Reply 5

Matheen1

Original post by Muttley79

The first three lines are correct but when you put dy/dx = 4 you need to collect the '4' on the right to get a quadratic = 0. Only then can you solve ...