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If-A-a-2-2a-B-1-a-2-2-a-and-S-1-0-are-three-points-then-prove-that-1-SA-1-SB-1-




Question Number 196992 by MATHEMATICSAM last updated on 05/Sep/23
If A(a^2 , 2a), B((1/a^2 ), ((− 2)/a)) and S(1, 0)   are three points then prove that,  (1/(SA)) + (1/(SB)) = 1.
$$\mathrm{If}\:\mathrm{A}\left({a}^{\mathrm{2}} ,\:\mathrm{2}{a}\right),\:\mathrm{B}\left(\frac{\mathrm{1}}{{a}^{\mathrm{2}} },\:\frac{−\:\mathrm{2}}{{a}}\right)\:\mathrm{and}\:\mathrm{S}\left(\mathrm{1},\:\mathrm{0}\right)\: \\ $$$$\mathrm{are}\:\mathrm{three}\:\mathrm{points}\:\mathrm{then}\:\mathrm{prove}\:\mathrm{that}, \\ $$$$\frac{\mathrm{1}}{\mathrm{SA}}\:+\:\frac{\mathrm{1}}{\mathrm{SB}}\:=\:\mathrm{1}. \\ $$

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