![If the p^th, q^th and r^th terms of an A.P. be a, b and c respectively, then prove that a(q - r) + b(r - p) + c(p - q) = 0 . If the p^th, q^th and r^th terms of an A.P. be a, b and c respectively, then prove that a(q - r) + b(r - p) + c(p - q) = 0 .](https://haygot.s3.amazonaws.com/questions/1892520_1742767_ans_bada3b97c8754dfd81d1df140d599354.jpeg)
If the p^th, q^th and r^th terms of an A.P. be a, b and c respectively, then prove that a(q - r) + b(r - p) + c(p - q) = 0 .
![Modern strategies for C–H functionalization of heteroarenes with alternative coupling partners - ScienceDirect Modern strategies for C–H functionalization of heteroarenes with alternative coupling partners - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2451929421003740-fx1.jpg)
Modern strategies for C–H functionalization of heteroarenes with alternative coupling partners - ScienceDirect
![Three vectors vec P, vec Q and vec R are shown in the figure. Let S be any point on the vector vec R . The distance between the points P and Three vectors vec P, vec Q and vec R are shown in the figure. Let S be any point on the vector vec R . The distance between the points P and](https://i.ytimg.com/vi/jb0vcWciqhc/maxresdefault.jpg)
Three vectors vec P, vec Q and vec R are shown in the figure. Let S be any point on the vector vec R . The distance between the points P and
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