Math, asked by ekantchakradhari85, 6 months ago

k के किस मान के लिए दिये गये समीकरण निकाय 5x-7y-5=0और 2x+ky-1=0काअध्दितीय हल होग​

Answers

Answered by MaheswariS
0

\underline{\textsf{Given:}}

\textsf{Equations are}

\mathsf{5x-7y-5=0}

\mathsf{2x+ky-1=0}

\underline{\textsf{To find:}}

\textsf{The value of k for which the equations will have unique solution}

\underline{\textsf{Solution:}}

\textsf{We know that,}

\textsf{The condition for the equaions}\;\mathsf{a_1x+b_1y+c_1=0\;\;\&\;\;a_2x+b_2y+c_2=0}

\textsf{have unique solution is}\;\mathsf{a_1b_2-a_2b_1{\neq}0}

\implies\mathsf{5k-2(-7){\neq}0}

\implies\mathsf{5k+14{\neq}0}

\implies\mathsf{5k{\neq}-14}

\implies\boxed{\mathsf{k{\neq}\dfrac{-14}{5}}}

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