find an equation for the line tangent to y=-5-5x^2 at (-2,-25)

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find an equation for the line tangent to y=-5-5x^2 at (-2,-25)

Guest Apr 13, 2015

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Best Answer

+118723

+5

y=-5-5x^2 at (-2,-25)

Always remember that the fisrst derivative gives the gradient of the tangent to the curve!

y'=0-10x= -10x

x=-2 y'=+20

so the gradient is 20 and a point on the tangent is (-2,-25)

Now can you finish it?

Melody Apr 13, 2015

1⁺⁰ Answers

+118723

+5

Best Answer

y=-5-5x^2 at (-2,-25)

Always remember that the fisrst derivative gives the gradient of the tangent to the curve!

y'=0-10x= -10x

x=-2 y'=+20

so the gradient is 20 and a point on the tangent is (-2,-25)

Now can you finish it?

Melody Apr 13, 2015

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