Calculus Examples

Convert to Trigonometric Form (1/2(cos(pi/7)+isin(pi/7)))^7
Step 1
Simplify each term.
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Step 1.1
Evaluate .
Step 1.2
Evaluate .
Step 1.3
Move to the left of .
Step 2
Simplify terms.
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Step 2.1
Apply the distributive property.
Step 2.2
Combine and .
Step 3
Multiply .
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Step 3.1
Combine and .
Step 3.2
Combine and .
Step 4
Simplify each term.
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Step 4.1
Divide by .
Step 4.2
Factor out of .
Step 4.3
Factor out of .
Step 4.4
Separate fractions.
Step 4.5
Divide by .
Step 4.6
Divide by .
Step 5
Use the Binomial Theorem.
Step 6
Simplify terms.
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Step 6.1
Simplify each term.
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Step 6.1.1
Raise to the power of .
Step 6.1.2
Raise to the power of .
Step 6.1.3
Multiply by .
Step 6.1.4
Multiply by .
Step 6.1.5
Raise to the power of .
Step 6.1.6
Multiply by .
Step 6.1.7
Apply the product rule to .
Step 6.1.8
Raise to the power of .
Step 6.1.9
Rewrite as .
Step 6.1.10
Multiply .
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Step 6.1.10.1
Multiply by .
Step 6.1.10.2
Multiply by .
Step 6.1.11
Raise to the power of .
Step 6.1.12
Multiply by .
Step 6.1.13
Apply the product rule to .
Step 6.1.14
Raise to the power of .
Step 6.1.15
Factor out .
Step 6.1.16
Rewrite as .
Step 6.1.17
Rewrite as .
Step 6.1.18
Multiply by .
Step 6.1.19
Multiply by .
Step 6.1.20
Raise to the power of .
Step 6.1.21
Multiply by .
Step 6.1.22
Apply the product rule to .
Step 6.1.23
Raise to the power of .
Step 6.1.24
Rewrite as .
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Step 6.1.24.1
Rewrite as .
Step 6.1.24.2
Rewrite as .
Step 6.1.24.3
Raise to the power of .
Step 6.1.25
Multiply .
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Step 6.1.25.1
Multiply by .
Step 6.1.25.2
Multiply by .
Step 6.1.26
Raise to the power of .
Step 6.1.27
Multiply by .
Step 6.1.28
Apply the product rule to .
Step 6.1.29
Raise to the power of .
Step 6.1.30
Factor out .
Step 6.1.31
Rewrite as .
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Step 6.1.31.1
Rewrite as .
Step 6.1.31.2
Rewrite as .
Step 6.1.31.3
Raise to the power of .
Step 6.1.32
Multiply by .
Step 6.1.33
Multiply by .
Step 6.1.34
Multiply by .
Step 6.1.35
Apply the product rule to .
Step 6.1.36
Raise to the power of .
Step 6.1.37
Factor out .
Step 6.1.38
Rewrite as .
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Step 6.1.38.1
Rewrite as .
Step 6.1.38.2
Rewrite as .
Step 6.1.38.3
Raise to the power of .
Step 6.1.39
Multiply by .
Step 6.1.40
Rewrite as .
Step 6.1.41
Multiply .
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Step 6.1.41.1
Multiply by .
Step 6.1.41.2
Multiply by .
Step 6.1.42
Apply the product rule to .
Step 6.1.43
Raise to the power of .
Step 6.1.44
Rewrite as .
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Step 6.1.44.1
Factor out .
Step 6.1.44.2
Factor out .
Step 6.1.45
Rewrite as .
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Step 6.1.45.1
Rewrite as .
Step 6.1.45.2
Rewrite as .
Step 6.1.45.3
Raise to the power of .
Step 6.1.46
Multiply by .
Step 6.1.47
Rewrite as .
Step 6.1.48
Rewrite as .
Step 6.1.49
Multiply by .
Step 6.2
Simplify by adding terms.
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Step 6.2.1
Subtract from .
Step 6.2.2
Simplify by adding and subtracting.
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Step 6.2.2.1
Add and .
Step 6.2.2.2
Subtract from .
Step 6.2.3
Subtract from .
Step 6.2.4
Add and .
Step 6.2.5
Subtract from .
Step 7
This is the trigonometric form of a complex number where is the modulus and is the angle created on the complex plane.
Step 8
The modulus of a complex number is the distance from the origin on the complex plane.
where
Step 9
Substitute the actual values of and .
Step 10
Find .
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Step 10.1
Raise to the power of .
Step 10.2
Raise to the power of .
Step 10.3
Add and .
Step 11
Evaluate the root.
Step 12
The angle of the point on the complex plane is the inverse tangent of the complex portion over the real portion.
Step 13
Since inverse tangent of produces an angle in the third quadrant, the value of the angle is .
Step 14
Substitute the values of and .