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Find the set of positive values of `b`for which the origin and the point (1, 1) lie on the same side of thestraight line, `a^2x+ab y+1=0,AAa in Rdot` |
Answer» Points (0,0) and (1,1) lie on same side of the line `a^(2) x +aby + 1= 0.` From (0,0). `a^(2)(0) + ab(0) + 1 gt 0` Therefore, for (1,1), we must have `a^(2) +ab + 1 gt 0 " " AA a in R`. `therefore D lt 0` `therefore b^(2)-4 lt 0` ` " or " b in (-2,2)` ` "But " b gt 0` `therefore b in (0,2)` |
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