Numerical analysis or numerical methods is a mathematics branch to solve mathematical equation with iterative algorithm to compute the solution (numerical solutions always have slight error, unlike the analytical solution). The bright side of learning numerical analysis is instead of differentiating or integrating one complex function we can use several algorithms that are available and can be learned from numerical methods.

In this article we will learn 4 algorithms to solve linear equation with 1 variable. First, we need to learn how to calculate error from numerical method compare with its true value.

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