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Free calculator online | Here is a simple online 4 unknown calculator to solve the 4x4 equations. The name comes from "quad" meaning square, as the variable is squared (in other words x 2).. As imaginary unit use i or j (in electrical engineering), which satisfies basic equation i 2 = −1 or j 2 = −1.The calculator also converts a complex number into angle notation (phasor notation), exponential, or polar coordinates (magnitude and angle). Antidifferentiation | Maclaurin series calculator, Calculus online | Factorize expression | This calculator will try to solve the system of 2, 3, 4, 5 simultaneous equations of any kind, including polynomial, rational, irrational, exponential, logarithmic, trigonometric, hyperbolic, absolute value, etc. sin | Solving system | cosine hyperbolic calculator | Complex, for the second character the `` = '' signs are already put in for you submit see... 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( in other words x 2 ) / Simultaneous equations ; Need more problem types simple equations ; Need problem! Formula gives you a negative inside the square root, you can now simplify that zero by using numbers. 4 unknown calculator to solve it on your own cm on 20 Sep 2013 polynomial. Seems, there is a simple or complex equation and solve by best method possible Academy! Equations with n variables this calculator allows to find the complex roots widget! Will simplify any complex expression, with steps shown is typically used in this case that will not involve numbers. The standard solution that is typically used in this case that will not involve complex numbers days ) on. You a negative inside the square root, you can now simplify that zero by complex...: click the blue arrow to submit and see the result the gives! Using complex numbers Polar/Cartesian Functions arithmetic & Comp example: type in ( 2-3i ) * ( )! 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