Assuming that each equation in problems 1-12 defines a differentiable function of x, find Dxy by implicit differentiation.

  1. Y2 – x2 = 1

 

  1. 9x2 + 4y2 = 36

 

  1. xy = 1

 

  1. X2 +  2y2 = 4 2, where  is a constant.

 

  1. Xy2 = x – 8

 

  1. X2 + 2x2y + 3xy = 0

 

  1. 4x3 + 7xy2 = 2y3

 

  1. X2y = 1 + y2x

 

  1.  + 2y = y2 + xy3

 

  1. x  + 2y = y2 + xy3

 

  1. xy + sin(xy) = 1

 

  1. cos(xy2) = y2 + x

 

  1. e2x+3y = x2 – ln(xy3)

 

  1. x2tan(y) + y10sec(x) = 2x

 

 

 

 

 

in problems 15-20, find the equation of the tangent line at the indicated point.

  1. X3y + y3x = 30; (1 , 3)

 

  1. X2y2 + 4xy = 12y; (2 , 1)

 

  1. Sin(xy) = y; (π/2 , 1)

 

  1. y + cos(xy2) + 3x2 = 4; (1 , 0)

 

  1. x2/3 – y2/3 – 2y = 2; (1 , -1)

 

  1. √x + xy2 = 5; (4 , 1)

In problems 21-32, find dy/dx

  1. y = 3x5/3 +

 

  1. y = ∛x – 2x7/2

 

  1. y = ∛x + √x

 

  1. y = ∜(2x + 1)

 

  1. y = ∜(3x2 - 4x)

 

  1. y = (x3 – 2x )1/3

 

  1. y = 1 / (x3 + 2x)2/3

 

  1. y = (3x – 9)-5/3

 

  1. y = √(x2 + sinx)

 

  1. y = √(x2cosx )

 

  1. y = 1 / (∛(x2sinx))

 

  1. y = ∜(1 + sin5x)

 

in Calculus Answers by Level 1 User (160 points)

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1 Answer

9x^2 +4 y^2=36 is ellips around (0,0)

majer axis=x & x-length=6

y-length=4
by

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