সমীকরণ(a(xb)(xc))/((ab)(ac)) + (b(xc)(xa))/((bc)(ba))+ (c (xa) (xb))/ ((ca)(cb)...

int (dx) / ((xa) (xb))

int (dx) / ((xb) ^ (3) (xa) ^ (2))

int (dx) / ((xa) ^ (2) (xb))

int (dx) / (sin (xa) sin (xb))

int (dx) / (sin (xa) sin (xb))

int (1) / (sin (xa) cos (xb)) dx =

int ((1) / ((sin xa) sin (xb))) dx

If a,b,c are in A.P. prove that: (i) (ab)^(-1),(ca)^(-1) and (bc)^(-1) are also in A.P. (ii) (ab+ac)/(bc),(bc+ca)/(ca),(ca+cb)/(ab) are also in A.P.

If bc:ac:ab=1:3:5, then find (a)/(bc):(b)/(ca) .

If a,b,c are in A.P., then (bc)/(ca+ab),(ca)/(bc+ab),(ab)/(bc+ca)