Family of straight lines. Equation of family of straight line passing through point of intersection of lines $L_1\,:\,a_1x\,+b_1y\,+c_1\,=0$ and $L_2\,:\,a_2x\,+b_2y\,+c_2\,=0$ is given by $L\,:\,L_1\,+ \lambda L_2\,=0$ , where $\lambda \in R$ , and $\lambda$ is a parameter as for every different $\lambda$ we get different member of family. … Continue reading Family of Straight lines.
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