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Chapter 08 practice bank

100 questions:
Many-Variable Calculus

Solve on paper first. Reveal only the final answer when you want to check yourself. There are no worked solutions in this bank by design.

34 easy 33 medium 33 advanced

EasyPartial derivativesmultivariable-matrix-calculus-001

For f(x,y)=1x²y+y³, find ∂f/∂x.

EasyPartial derivativesmultivariable-matrix-calculus-002

For f(x,y)=2x²y+y³, find ∂f/∂y.

EasyGradientsmultivariable-matrix-calculus-003

Find ∇(x²+y²) at (3,-3).

EasyDirectional derivativesmultivariable-matrix-calculus-004

For f(x,y)=x²+xy, find the directional derivative at (5,4) along e₁=[1,0].

EasyJacobiansmultivariable-matrix-calculus-005

Find the Jacobian of F(x,y)=[5x+y,x+6y].

EasyHessiansmultivariable-matrix-calculus-006

Find the Hessian of f(x,y)=1x²+3y².

EasyTangent planesmultivariable-matrix-calculus-007

Give the tangent plane to z=xy at (3,3).

EasyJacobian shapesmultivariable-matrix-calculus-008

What is the Jacobian shape for F:ℝ^2→ℝ^3 using outputs as rows?

EasyMatrix calculusmultivariable-matrix-calculus-009

For f(x)=[1,5]x, where x∈ℝ², find ∇ₓf.

EasyDouble integralsmultivariable-matrix-calculus-010

Evaluate ∬_R 1 dA for R=[0,2]×[0,6].