Math Problem Statement
et z_1 =(-i)/(-1+i),z_2=1+i/(1-i) and z_3=1/10[2(i-1)i+(-i+sqrt3)^3]+(1-i)bar((1-i))]
express /bar(z_1z_2)/z_3,z_1barz_2/z3 and barz_1/barz_3z_2 in both polar and standard forms
Solution
To solve the problem, we need to first express , , and in their standard forms (rectangular forms) and then compute the required expressions.
Step 1: Simplify
Simplify the expression by multiplying the numerator and the denominator by the conjugate of the denominator:
The denominator is:
The numerator is:
So,
Step 2: Simplify
Similarly, simplify by multiplying by the conjugate of the denominator:
Step 3: Simplify
First, simplify each term:
For the cubic term, :
Let . Then:
Expanding:
= -2i + 2\sqrt{3} - 6 + 2i^2 = -2i + 2\sqrt{3} - 6 + 2i(-i) + 6\sqrt{3} = (-6 + 2i + 6) + (2i - 6i) = -2\sqrt{3}i$$ So: $$(-i + \sqrt{3})^3 = -6 + 2\sqrt{3} + i(-2 - 6i)$$ Adding the above with $$-2 - 2i + (-6 + 2\sqrt{3}) + i(\overline{1 - i})$$ we add the following: Conjugate: $$\overline{(1 - i)} = 1 + i$$: $$= (-6 + 2\sqrt{3}) =$$ equals: ### Expression forms: Express in simplified: $$z_3 = -6 + 2\sqrt{3} + (1+i)(1-i)$$ Combining all of these to a real simplified expression on both $$/bar(z_1z_2)/z_3,z_1barz_2/z3$$. Tip: Solve math on both formats by steps.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Polar Form
Rectangular Form
Conjugates
Formulas
z = a + bi
|z| = sqrt(a^2 + b^2)
Conjugate of z: bar(z) = a - bi
Multiplication of complex numbers in polar form: r1 * r2 [cos(θ1 + θ2) + i*sin(θ1 + θ2)]
Theorems
De Moivre's Theorem
Complex Number Conjugation
Modulus of Complex Numbers
Suitable Grade Level
Undergraduate
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