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Differentiation

Stuck again. This time I have no clue what to do


Find the equation of a tangent to the curve y=x^2 which is parallel to the line y=x
Original post by danad2341
Stuck again. This time I have no clue what to do


Find the equation of a tangent to the curve y=x^2 which is parallel to the line y=x


Do you know how to find the gradient function of the curve?

Do you know what parallel means?

Do you know what the gradient of y=x is?
Reply 2
Avatar for danad2341
danad2341
OP
Original post by TenOfThem
Do you know how to find the gradient function of the curve?

Do you know what parallel means?

Do you know what the gradient of y=x is?


1) dy/dx

2) really?

3) 1
Original post by danad2341
1) dy/dx

2) really?

3) 1


Then, unless your "really?" meant - no I have no idea - what are you struggling with?
Reply 4
Avatar for lerjj
lerjj
13
Original post by danad2341
1) dy/dx

2) really?

3) 1


for 1) I think the poster meant how to find dy/dx, although the fact that you at least know how to refer to it makes it unlikely that you can't work it out in this case

2) they meant the mathematical conditions for being parallel. Not whether you can draw parallel lines, whether you can write out equations for parallel lines.
Reply 5
Avatar for danad2341
danad2341
OP
Original post by TenOfThem
Then, unless your "really?" meant - no I have no idea - what are you struggling with?


how do you work it out?
Original post by danad2341
how do you work it out?


You know the gradient of the curve

You know what you want the gradient to be (unless your really was a NO)

So you can find x

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