Question
Function
Find the first partial derivative with respect to x
Find the first partial derivative with respect to y
∂x∂z=20
Simplify
z=20x+10y
Find the first partial derivative by treating the variable y as a constant and differentiating with respect to x
∂x∂z=∂x∂(20x+10y)
Use differentiation rule ∂x∂(f(x)±g(x))=∂x∂(f(x))±∂x∂(g(x))
∂x∂z=∂x∂(20x)+∂x∂(10y)
Evaluate
More Steps

Evaluate
∂x∂(20x)
Use differentiation rule ∂x∂(cf(x))=c×∂x∂(f(x))
20×∂x∂(x)
Use ∂x∂xn=nxn−1 to find derivative
20×1
Multiply the terms
20
∂x∂z=20+∂x∂(10y)
Use ∂x∂(c)=0 to find derivative
∂x∂z=20+0
Solution
∂x∂z=20
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Solve the equation
Solve for x
Solve for y
x=20z−10y
Evaluate
z=20x+10y
Swap the sides of the equation
20x+10y=z
Move the expression to the right-hand side and change its sign
20x=z−10y
Divide both sides
2020x=20z−10y
Solution
x=20z−10y
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