- PQ and PR are two chords of a circle radius r.If perpendiculars drawn from center to these chords are of length a and b.PQ=2PR.prove that b2=a2/4+3/4r2
Is the function f:R->R be defined by f(x)=2x-3 and g:R->R by g(x) =x^3 +5,then find fog and show that fog is invertible .also find (fog)inverse hence find (fog )inverse(9)