Question

Write the following in the form of $re^{i\theta}$, r = | a + bi | = $\sqrt{a^2 + b^2}$ a. 1 + $\sqrt{3}i$ b. - 2 + 2i c. -$\sqrt{3}$ - i d. $\sqrt{2}$ - $\sqrt{2}i$ e. (1 + $\sqrt{3}i$)^{12} f. 2i g. $\sqrt{3}i$ - 1 h. ($\frac{1+i}{1-i}$)$^5$

          Write the following in the form of $re^{i\theta}$, r = | a + bi | = $\sqrt{a^2 + b^2}$ 
a. 1 + $\sqrt{3}i$
b. - 2 + 2i
c. -$\sqrt{3}$ - i
d. $\sqrt{2}$ - $\sqrt{2}i$
e. (1 + $\sqrt{3}i$)^{12}
f. 2i
g. $\sqrt{3}i$ - 1
h. ($\frac{1+i}{1-i}$)$^5$
        
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Write the following in the form of re^iθ, r = | a + bi | = √(a^2 + b^2) 
a. 1 + √(3)i
b. - 2 + 2i
c. -√(3) - i
d. √(2) - √(2)i
e. (1 + √(3)i)^12
f. 2i
g. √(3)i - 1
h. ((1+i)/(1-i))^5

Added by Charles P.

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Calculus: Early Transcendentals
Calculus: Early Transcendentals
James Stewart 8th Edition
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Write the following in the form of reiθ, r = |a + bi| = √(a^2 + b^2) Write the following in the form of reiθ, r = |a + bi| = √(a^2 + b^2) a. 1 + √3i b. -2 + 2i c. -√3 - i d. √2 - √2i e. (1 + √3i)^12 f. 2i g. √3i - 1 h. √3i
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Transcript

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00:01 In this video we are going to focus on converting the given complex number into polar form.
00:06 So it will be minus 1 minus iota under root of 3 raised to the power 30.
00:12 So here the value of this very complex number, that is the magnitude, can be written as it will be basically equals to.
00:21 So what we have done here, we have firstly assumed that let z1 is equal to minus 1 minus under root of 3 iota.
00:32 Now here we can say that the value of z1 modulus will be equals to what? that is we are writing the magnitude.
00:39 So it will be minus 1 raised to the power 2.
00:42 Now it will be here plus minus under root of 3 raised to the power 2.
00:46 So this very value is going to be equals to 2.
00:49 Now here we can discuss about the argument of z 1.
00:53 So here any point can be represented on the complex plane where this axis represent real axis and this vertical axis represent the imaginary axis so we write it like this right now here we can say that it will be here basically minus 1 comma minus under root of 3 so since the point is in third quadrant the argument will be let's write here that argument of z 1 will be equal to minus pi plus alpha...
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