Giggly3675
Giggly3675 Giggly3675
  • 02-07-2021
  • Mathematics
contestada

If y = 2x3 - 4x and dx, dt equals 4 , find dy, dt when x = 1. Give only the numerical answer. For example, if dy, dt = 3, type only 3

Respuesta :

jimthompson5910 jimthompson5910
  • 02-07-2021

Answer:  8

Work Shown:

y = 2x^3 - 4x

dy/dt = 2*3*x^2*dx/dt - 4*dx/dt

dy/dt = 2*3*1^2*4 - 4*4

dy/dt = 8

notice how I used the chain rule for step 2.

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