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College+ · Multivariable Calculus

Change of variables

132 problems in this skill, each with a solver-verified answer key. Answers are checked the moment you submit — with a hint if you want one and a worked solution afterwards.

What the problems look like

A few statements from this skill. Answers, hints and worked solutions live in the practice session.

  1. Warm-up

    A change of variables is defined by x=−2u+4vx = -2u + 4v and y=3u−3vy = 3u - 3v. Compute the Jacobian determinant ∂(x,y)∂(u,v)\dfrac{\partial(x,y)}{\partial(u,v)}.

  2. Warm-up

    A change of variables is defined by x=0u+4vx = 0u + 4v and y=2u+5vy = 2u + 5v. Compute the Jacobian determinant ∂(x,y)∂(u,v)\dfrac{\partial(x,y)}{\partial(u,v)}.

  3. Warm-up

    A change of variables is defined by x=4u−4vx = 4u - 4v and y=4u−5vy = 4u - 5v. Compute the Jacobian determinant ∂(x,y)∂(u,v)\dfrac{\partial(x,y)}{\partial(u,v)}.

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