(a1x+b1)²+(a2x+b2)²+......................(a_nx+b_n)²=0

 

1) if a1/a2b1/b2c1/c2,

2)if a1/a2=b1/b2=c1/c2

then how many real solutions does this equation has?

 hi Ronak! I have the same problem and am agreeing with your views and am waiting for that section to start.

 

given a dish consisting of two concentric circles of radii r1 and r2 respectively.

find the centre of mass of the system?

 

how to derive the formula for centre of mass?

(m1r1+m2r2)/(m1+m2)