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A line intersects the straight lines `5x-y-4=0`and `3x-4y-4=0`at `A`and `B`, respectively. If a point `P(1,5)`on the line `A B`is such that `A P: P B=2:1`(internally), find point `Adot` |
Answer» Correct Answer - (75/17, 307/17) Any point A on the first line is (t, 5t-4). Any point B on the second line is (r, (3r-4)/4). Hence, `1=(2r+t)/(3) " and " 5=((3r-4)/(2)+5t-4)/(3)` or 2r+t = 3 and 3r+10t = 42 On solving, we get `t = (75)/(17)` Hence, A is (75/17,307/17). |
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