SlytherinPrincess8 SlytherinPrincess8
  • 12-05-2020
  • Mathematics
contestada

What is the slope of the tangent line to the parametric curve x = t2 + 2t, y = t2 + 1 at t = 1?

I tried to solve before and got 2, which was incorrect.

Thank you in advance!

Respuesta :

MathPhys
MathPhys MathPhys
  • 12-05-2020

Answer:

1/2

Step-by-step explanation:

x = t² + 2t

dx/dt = 2t + 2

y = t² + 1

dy/dt = 2t

dy/dx = (dy/dt) / (dx/dt)

dy/dx = 2t / (2t + 2)

dy/dx = t / (t + 1)

At t = 1, dy/dx = 1/2.

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