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What is equation of straight line which passes through (x1 , y1) and is perpendicular to the line (i) xx1+yy1=a^2
(ii) (xx1/a^2)+(yy1/b^2)=1? Screenshot of the question is below? Calculate the pH of a 1.65 M NH4CN solution.? If antenna is fed with pulsed DC instead of AC at its resonant frequency, how efficient will it be? Let A-n = n² + 50. What is the largest prime divisor that divides two consecutive terms of the sequence?