Question
Solve the equation
Solve for x
Solve for y
x=0
Evaluate
x2y2=0
Rewrite the expression
y2x2=0
Rewrite the expression
x2=0
Solution
x=0
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Testing for symmetry
Testing for symmetry about the origin
Testing for symmetry about the x-axis
Testing for symmetry about the y-axis
Symmetry with respect to the origin
Evaluate
x2y2=0
To test if the graph of x2y2=0 is symmetry with respect to the origin,substitute -x for x and -y for y
(−x)2(−y)2=0
Evaluate
x2y2=0
Solution
Symmetry with respect to the origin
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Rewrite the equation
r=0θ=2kπ,k∈Z
Evaluate
x2y2=0
To convert the equation to polar coordinates,substitute x for rcos(θ) and y for rsin(θ)
(cos(θ)×r)2(sin(θ)×r)2=0
Factor the expression
(cos(θ)sin(θ))2r4=0
Simplify the expression
41sin2(2θ)×r4=0
Separate into possible cases
r4=041sin2(2θ)=0
Evaluate
r=041sin2(2θ)=0
Solution
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Evaluate
41sin2(2θ)=0
Rewrite the expression
sin2(2θ)=0
The only way a power can be 0 is when the base equals 0
sin(2θ)=0
Use the inverse trigonometric function
2θ=arcsin(0)
Calculate
2θ=0
Add the period of kπ,k∈Z to find all solutions
2θ=kπ,k∈Z
Solve the equation
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Evaluate
2θ=kπ
Divide both sides
22θ=2kπ
Divide the numbers
θ=2kπ
θ=2kπ,k∈Z
r=0θ=2kπ,k∈Z
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Find the first derivative
Find the derivative with respect to x
Find the derivative with respect to y
dxdy=−xy
Calculate
x2y2=0
Take the derivative of both sides
dxd(x2y2)=dxd(0)
Calculate the derivative
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Evaluate
dxd(x2y2)
Use differentiation rules
dxd(x2)×y2+x2×dxd(y2)
Use dxdxn=nxn−1 to find derivative
2xy2+x2×dxd(y2)
Evaluate the derivative
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Evaluate
dxd(y2)
Use differentiation rules
dyd(y2)×dxdy
Use dxdxn=nxn−1 to find derivative
2ydxdy
2xy2+2x2ydxdy
2xy2+2x2ydxdy=dxd(0)
Calculate the derivative
2xy2+2x2ydxdy=0
Move the expression to the right-hand side and change its sign
2x2ydxdy=0−2xy2
Removing 0 doesn't change the value,so remove it from the expression
2x2ydxdy=−2xy2
Divide both sides
2x2y2x2ydxdy=2x2y−2xy2
Divide the numbers
dxdy=2x2y−2xy2
Solution
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Evaluate
2x2y−2xy2
Cancel out the common factor 2
x2y−xy2
Reduce the fraction
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Evaluate
x2x
Use the product rule aman=an−m to simplify the expression
x2−11
Subtract the terms
x11
Simplify
x1
xy−y2
Reduce the fraction
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Evaluate
yy2
Use the product rule aman=an−m to simplify the expression
y2−1
Subtract the terms
y1
Simplify
y
x−y
Use b−a=−ba=−ba to rewrite the fraction
−xy
dxdy=−xy
Show Solution

Find the second derivative
Find the second derivative with respect to x
Find the second derivative with respect to y
dx2d2y=x22y
Calculate
x2y2=0
Take the derivative of both sides
dxd(x2y2)=dxd(0)
Calculate the derivative
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Evaluate
dxd(x2y2)
Use differentiation rules
dxd(x2)×y2+x2×dxd(y2)
Use dxdxn=nxn−1 to find derivative
2xy2+x2×dxd(y2)
Evaluate the derivative
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Evaluate
dxd(y2)
Use differentiation rules
dyd(y2)×dxdy
Use dxdxn=nxn−1 to find derivative
2ydxdy
2xy2+2x2ydxdy
2xy2+2x2ydxdy=dxd(0)
Calculate the derivative
2xy2+2x2ydxdy=0
Move the expression to the right-hand side and change its sign
2x2ydxdy=0−2xy2
Removing 0 doesn't change the value,so remove it from the expression
2x2ydxdy=−2xy2
Divide both sides
2x2y2x2ydxdy=2x2y−2xy2
Divide the numbers
dxdy=2x2y−2xy2
Divide the numbers
More Steps

Evaluate
2x2y−2xy2
Cancel out the common factor 2
x2y−xy2
Reduce the fraction
More Steps

Evaluate
x2x
Use the product rule aman=an−m to simplify the expression
x2−11
Subtract the terms
x11
Simplify
x1
xy−y2
Reduce the fraction
More Steps

Evaluate
yy2
Use the product rule aman=an−m to simplify the expression
y2−1
Subtract the terms
y1
Simplify
y
x−y
Use b−a=−ba=−ba to rewrite the fraction
−xy
dxdy=−xy
Take the derivative of both sides
dxd(dxdy)=dxd(−xy)
Calculate the derivative
dx2d2y=dxd(−xy)
Use differentiation rules
dx2d2y=−x2dxd(y)×x−y×dxd(x)
Calculate the derivative
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Evaluate
dxd(y)
Use differentiation rules
dyd(y)×dxdy
Use dxdxn=nxn−1 to find derivative
dxdy
dx2d2y=−x2dxdy×x−y×dxd(x)
Use dxdxn=nxn−1 to find derivative
dx2d2y=−x2dxdy×x−y×1
Use the commutative property to reorder the terms
dx2d2y=−x2xdxdy−y×1
Any expression multiplied by 1 remains the same
dx2d2y=−x2xdxdy−y
Use equation dxdy=−xy to substitute
dx2d2y=−x2x(−xy)−y
Solution
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Calculate
−x2x(−xy)−y
Multiply the terms
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Evaluate
x(−xy)
Multiplying or dividing an odd number of negative terms equals a negative
−x×xy
Cancel out the common factor x
−1×y
Multiply the terms
−y
−x2−y−y
Subtract the terms
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Simplify
−y−y
Collect like terms by calculating the sum or difference of their coefficients
(−1−1)y
Subtract the numbers
−2y
−x2−2y
Divide the terms
−(−x22y)
Calculate
x22y
dx2d2y=x22y
Show Solution
