Complex numbers-Questions and Answers 100%Correct
Complex numbers-Questions and Answers 100%Correct what is a complex number? - ANSWER-a number that has a real part and an imaginary part what is Re(3+2i)? - ANSWER-3 what is Im(3+2i)? - ANSWER-2 what is the complex conjugate of 5-3i? - ANSWER-5+3i z=4+i z*=? - ANSWER-4-i z=a+bi zz*=? - ANSWER-a^2+b^2 what coordinate does 3+2i occupy on the Argand diagram? - ANSWER-(3,2) Imaginary Numbers - ANSWER-Square roots of negative numbers. Pure Imaginary Number - ANSWER-the square roots of negative real numbers. Simplify Square Roots - ANSWER-To simplify a square root, you "take out" anything that is a "perfect square". Roots of a graph - ANSWER-A root is the x value when the y value = 0. Adding complex numbers - ANSWER-(a+bi)+(c+di) = (a+c) + (b+d)i Add real parts, then add the imaginary parts on, expressing the sum as a complex number. Subtracting complex numbers - ANSWER-(a+bi)-(c+di) = (a+c)-(b+d)i Subtract real parts, then subtract imaginary parts, and express the difference as a complex number. Multiplying radicals - ANSWER-Multiply the number under the radical and then find the square root of the number. Radical - ANSWER-The square root symbol.
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