Free complex number calculator - step-by-step solutions to help find the complex factors of the quadratic expressions, find all the complex number solutions, find the magnitude of complex number and find trigonometric form of a complex number.

Just type your formula into the top box. Example: type in (2-3i)* (1+i), and see the answer of 5-i. Returns the largest (closest to positive infinity) value that is not greater than the argument and is an integer. Returns the smallest (closest to negative infinity) value that is not less than the argument and is an integer.

Calculate the ratio of the two fifth roots of the number 32. Calculate the value of expression log |-10 -2i +7i²| . Evaluate an expression with complex numbers using an online calculator.

2016年12月31日 · $ f(x)=−5\mathbb{1}_{x>2}(x)+x\mathbb{1}_{x<−1}(x)$ in $x=3$ is $f(3)=-5$ because $3>2$ and 3 isn't $\leq-1$

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

2012年4月10日 · 5i/2-i=?(i为虚数）方法：凡是遇到分母有虚数的，都要对分母通分（即：乘以平方差公式的另一半）例如：2-i就乘以2+i5+i就乘以5-i·······此方法万试万灵答案就是2i-1

Do you happen to know the theorem that states this? An other solution to solve this is to put x = a + ib, (a, b) ∈ R. Then x² + (3 + 5i)x + (7 + 11i) = 0 becomes. a² − b² + 3a − 5b + 7 + i(2ab + 3b + 5a + 11) = 0. The real and imaginary parts must be each equal to 0 and you compute like this. A bit ugly, but a different way to do...

解答： 解：复数5i（2+i）=10i-5=-5+10i， 故答案为：-5+10i． 点评： 本题主要考查两个复数代数形式的乘除法，虚数单位i的幂运算性质，属于基础题．

This calculator simplifies expressions involving complex numbers. The calculator shows all steps and an easy-to-understand explanation for each step. Find more worked-out examples in our …

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