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The differential equation of all non-vertical lines in a plane, isA. `(d^(2)y)/(dx^(2))=0`B. `(d^(2)x)/(dy^(2))=0`C. `(dy)/(dx)=0`D. `(dx)/(dy)=0` |
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Answer» Correct Answer - A The general equation all non-vertical lines in a plane is `ax+by=1`, where `b ne 0`. Now, `ax+by=1` `rArr" "a+b(dy)/(dx)=0" [Differentiating w.r. to x]"` `rArr" "b(d^(2)y)/(dx)=0" [Differentiating w.r. to x]"` `rArr" "(d^(2)y)/(dx^(2))=0" "[because b ne 0]` Hence, the differential equation is `(d^(2)y)/(dx^(2))=0` |
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