Question :
x^3+y^3=4
Solve the equation
Solve for x
Solve for y
x=34−y3
Evaluate
x3+y3=4
Move the expression to the right-hand side and change its sign
x3=4−y3
Take the 3-th root on both sides of the equation
3x3=34−y3
Solution
x=34−y3
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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
Not symmetry with respect to the origin
Evaluate
x3+y3=4
To test if the graph of x3+y3=4 is symmetry with respect to the origin,substitute -x for x and -y for y
(−x)3+(−y)3=4
Evaluate
More Steps

Evaluate
(−x)3+(−y)3
Rewrite the expression
−x3+(−y)3
Rewrite the expression
−x3−y3
−x3−y3=4
Solution
Not symmetry with respect to the origin
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Rewrite the equation
r=3cos3(θ)+sin3(θ)34
Evaluate
x3+y3=4
To convert the equation to polar coordinates,substitute rcos(θ) for x and rsin(θ) for y
(cos(θ)×r)3+(sin(θ)×r)3=4
Factor the expression
(cos3(θ)+sin3(θ))r3=4
Divide the terms
r3=cos3(θ)+sin3(θ)4
Solution
r=3cos3(θ)+sin3(θ)34
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Find the first derivative
Find the derivative with respect to x
Find the derivative with respect to y
dxdy=−y2x2
Calculate
x3+y3=4
Take the derivative of both sides
dxd(x3+y3)=dxd(4)
Calculate the derivative
More Steps

Evaluate
dxd(x3+y3)
Use differentiation rules
dxd(x3)+dxd(y3)
Use dxdxn=nxn−1 to find derivative
3x2+dxd(y3)
Evaluate the derivative
More Steps

Evaluate
dxd(y3)
Use differentiation rules
dyd(y3)×dxdy
Use dxdxn=nxn−1 to find derivative
3y2dxdy
3x2+3y2dxdy
3x2+3y2dxdy=dxd(4)
Calculate the derivative
3x2+3y2dxdy=0
Move the expression to the right-hand side and change its sign
3y2dxdy=0−3x2
Removing 0 doesn't change the value,so remove it from the expression
3y2dxdy=−3x2
Divide both sides
3y23y2dxdy=3y2−3x2
Divide the numbers
dxdy=3y2−3x2
Solution
More Steps

Evaluate
3y2−3x2
Cancel out the common factor 3
y2−x2
Use b−a=−ba=−ba to rewrite the fraction
−y2x2
dxdy=−y2x2
Show Solution

Find the second derivative
Find the second derivative with respect to x
Find the second derivative with respect to y
dx2d2y=−y52xy3+2x4
Calculate
x3+y3=4
Take the derivative of both sides
dxd(x3+y3)=dxd(4)
Calculate the derivative
More Steps

Evaluate
dxd(x3+y3)
Use differentiation rules
dxd(x3)+dxd(y3)
Use dxdxn=nxn−1 to find derivative
3x2+dxd(y3)
Evaluate the derivative
More Steps

Evaluate
dxd(y3)
Use differentiation rules
dyd(y3)×dxdy
Use dxdxn=nxn−1 to find derivative
3y2dxdy
3x2+3y2dxdy
3x2+3y2dxdy=dxd(4)
Calculate the derivative
3x2+3y2dxdy=0
Move the expression to the right-hand side and change its sign
3y2dxdy=0−3x2
Removing 0 doesn't change the value,so remove it from the expression
3y2dxdy=−3x2
Divide both sides
3y23y2dxdy=3y2−3x2
Divide the numbers
dxdy=3y2−3x2
Divide the numbers
More Steps

Evaluate
3y2−3x2
Cancel out the common factor 3
y2−x2
Use b−a=−ba=−ba to rewrite the fraction
−y2x2
dxdy=−y2x2
Take the derivative of both sides
dxd(dxdy)=dxd(−y2x2)
Calculate the derivative
dx2d2y=dxd(−y2x2)
Use differentiation rules
dx2d2y=−(y2)2dxd(x2)×y2−x2×dxd(y2)
Use dxdxn=nxn−1 to find derivative
dx2d2y=−(y2)22xy2−x2×dxd(y2)
Calculate the derivative
More Steps

Evaluate
dxd(y2)
Use differentiation rules
dyd(y2)×dxdy
Use dxdxn=nxn−1 to find derivative
2ydxdy
dx2d2y=−(y2)22xy2−x2×2ydxdy
Use the commutative property to reorder the terms
dx2d2y=−(y2)22xy2−2x2ydxdy
Calculate
More Steps

Evaluate
(y2)2
Multiply the exponents
y2×2
Multiply the terms
y4
dx2d2y=−y42xy2−2x2ydxdy
Calculate
dx2d2y=−y32xy−2x2dxdy
Use equation dxdy=−y2x2 to substitute
dx2d2y=−y32xy−2x2(−y2x2)
Solution
More Steps

Calculate
−y32xy−2x2(−y2x2)
Multiply
More Steps

Multiply the terms
2x2(−y2x2)
Any expression multiplied by 1 remains the same
−2x2×y2x2
Multiply the terms
−y22x4
−y32xy−(−y22x4)
Subtract the terms
More Steps

Simplify
2xy−(−y22x4)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
2xy+y22x4
Reduce fractions to a common denominator
y22xy×y2+y22x4
Write all numerators above the common denominator
y22xy×y2+2x4
Multiply the terms
y22xy3+2x4
−y3y22xy3+2x4
Divide the terms
More Steps

Evaluate
y3y22xy3+2x4
Multiply by the reciprocal
y22xy3+2x4×y31
Multiply the terms
y2×y32xy3+2x4
Multiply the terms
y52xy3+2x4
−y52xy3+2x4
dx2d2y=−y52xy3+2x4
Show Solution
