If b is not equal to zero and a is any real number, the complex number a + bi is called imaginary number. In other words, if the imaginary unit i is in it, we can just call it imaginary number.If the imaginary unit i is in t, but the real real part is not in it such as...
If z is any complex number satisfying |z - 3 - 2i | less than or equal... 04:00 Let z=1+ai be a complex number, a > 0,such that z^3 is a real number... 07:07 Let a,b in R and a^(2)+b^(2) ne 0. Suppose S={z in C:z=(1)/(a+ibt),t... 10:00 Let a...
Prove that, if z is a complex number, then e^z+e^z and e^z* e^z are both real. What can you say about e^z-e^z and e^z÷ e^z?相关知识点: 试题来源: 解析 e^z-e^z is imaginary, e^z÷ e^z has modulus 1.反馈 收藏 ...
In mathematics, a complex number is a number of the form a + bi, where a and b are real numbers and i is the imaginary number {eq}\sqrt{-1} {/eq}. We call a the real part of the number, and we call bi the imaginary part of the number. The complex conjugate of any complex...
百度试题 结果1 题目The sum of a complex number and its conjugate is alwaysA:a pure imaginary numberB:1C:D:a pure real number 相关知识点: 试题来源: 解析 D None 反馈 收藏
Imaginary numbers are also called complex numbers. When imaginary numbers are squared, the result is a negative number. Imaginary numbers are used in certain calculations, such as quadratic equations. They are the result of a real number multiplied by i, when i equals the square root of -1....
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Building a Class A complex number is a number made of two real numbers, one part is called therealpart of the number, the other theimaginary. They are normally written in the form a + bia+bi where aa is the real part, bb is the imagina...
Recall that the conjugate of a complex number z=x+y is denoted by z and is defined by z=x-y. Show that z+ z lies on the real axis. 相关知识点: 试题来源: 解析 Consider the complex number z=x+ The conjugate of the complex number z=x+ is denoted by z and is defined as z ...
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