Question
Function
Evaluate the derivative
Find the domain
Find the x-intercept/zero
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y′=2x−12x3
Evaluate
y=x2−3x4
Take the derivative of both sides
y′=dxd(x2−3x4)
Use differentiation rule dxd(f(x)±g(x))=dxd(f(x))±dxd(g(x))
y′=dxd(x2)−dxd(3x4)
Use dxdxn=nxn−1 to find derivative
y′=2x−dxd(3x4)
Solution
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Calculate
dxd(3x4)
Use differentiation rule dxd(cf(x))=c×dxd(f(x))
3×dxd(x4)
Use dxdxn=nxn−1 to find derivative
3×4x3
Multiply the terms
12x3
y′=2x−12x3
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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
y=x2−3x4
To test if the graph of y=x2−3x4 is symmetry with respect to the origin,substitute -x for x and -y for y
−y=(−x)2−3(−x)4
Simplify
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Evaluate
(−x)2−3(−x)4
Multiply the terms
(−x)2−3x4
Rewrite the expression
x2−3x4
−y=x2−3x4
Change the signs both sides
y=−x2+3x4
Solution
Not symmetry with respect to the origin
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Solve the equation
x=66+61−12yx=−66+61−12yx=66−61−12yx=−66−61−12y
Evaluate
y=x2−3x4
Swap the sides of the equation
x2−3x4=y
Move the expression to the left side
x2−3x4−y=0
Solve the equation using substitution t=x2
t−3t2−y=0
Rewrite in standard form
−3t2+t−y=0
Multiply both sides
3t2−t+y=0
Substitute a=3,b=−1 and c=y into the quadratic formula t=2a−b±b2−4ac
t=2×31±(−1)2−4×3y
Simplify the expression
t=61±(−1)2−4×3y
Simplify the expression
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Evaluate
(−1)2−4×3y
Evaluate the power
1−4×3y
Multiply the terms
1−12y
t=61±1−12y
Separate the equation into 2 possible cases
t=61+1−12yt=61−1−12y
Substitute back
x2=61+1−12yx2=61−1−12y
Solve the equation for x
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Substitute back
x2=61+1−12y
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±61+1−12y
Simplify the expression
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Evaluate
61+1−12y
To take a root of a fraction,take the root of the numerator and denominator separately
61+1−12y
Multiply by the Conjugate
6×61+1−12y×6
Calculate
61+1−12y×6
Calculate
66+61−12y
x=±66+61−12y
Separate the equation into 2 possible cases
x=66+61−12yx=−66+61−12y
x=66+61−12yx=−66+61−12yx2=61−1−12y
Solution
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Substitute back
x2=61−1−12y
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±61−1−12y
Simplify the expression
More Steps

Evaluate
61−1−12y
To take a root of a fraction,take the root of the numerator and denominator separately
61−1−12y
Multiply by the Conjugate
6×61−1−12y×6
Calculate
61−1−12y×6
Calculate
66−61−12y
x=±66−61−12y
Separate the equation into 2 possible cases
x=66−61−12yx=−66−61−12y
x=66+61−12yx=−66+61−12yx=66−61−12yx=−66−61−12y
Show Solution
