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Free linear first order differential equations calculator - solve ordinary linear first order differential equations step-by-step This website uses cookies to ensure you get the best experience. Precalculus. A quadratic equation is a second degree polynomial having the general form ax^2 + bx + c = 0, where a, b, and c... \frac{3}{4}x+\frac{5}{6}=5x-\frac{125}{3}. Linear equation theory is the basic and fundamental part of the linear algebra. To get `tan(x)sec^3(x)`, use parentheses: tan(x)sec^3(x). linear-equation-calculator. Visit Mathway on the web. If you skip parentheses or a multiplication sign, type at least a whitespace, i.e. equation_solver online. However, in some cases (for example, when the coefficient ) simpler methods are used. This Solver (Linear Equation Solver) was created by by jim_thompson5910(35256) : View Source, Show, Put on YOUR site About jim_thompson5910 : If you need more math help, then you can email me. A linear equation is an equation for a straight line. 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