Chapter 2: Problem 101
Prove that the complex conjugate of the sum of two complex numbers \( a_1 + a_1i \) and \( a_2 + b_2i \) is the sum of their complex conjugates.
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Chapter 2: Problem 101
Prove that the complex conjugate of the sum of two complex numbers \( a_1 + a_1i \) and \( a_2 + b_2i \) is the sum of their complex conjugates.
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In Exercises 73 - 76, (a) use the graph to determine any \( x \)-intercepts of the graph of the rational function and (b) set \( y = 0 \) and solve the resulting equation to confirm your result in part (a). \( y = \dfrac{2x}{x -3} \)
In Exercises 13 - 30, solve the inequality and graph the solution on the real number line. \( x^2 \le 16 \)
In Exercises 83 - 86, (a) find the interval(s) for \( b \) such that the equation has at least one real solution and (b) write a conjecture about the interval(s) based on the values of the coefficients. \( x^2 + bx - 4 = 0 \)
In Exercises 13 - 30, solve the inequality and graph the solution on the real number line. \( x^2 + 2x > 3 \)
Fill in the blanks. Between two consecutive zeros, a polynomial must be entirely ________ or entirely ________.
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