1.

p2 = a cos20 + b2 sin20 269 came ,p.+ dp-a262dO2p3

Answer»

lnp^2=a^2+(b^2-a^2)sin^2x

2lnp=a^2+(b^2-a^2)sin^2x

Now differentiate w.r.t.x

2/p(dp/dx)=(b^2-a^2)2sinx cosx=(b^2-a^2)sin2x

dp/dx=p/2(a^2-b^2)sin2x

Again defferentiate w.r.t x

d^2p/d^2x=1/2(dp/dx)(a^2-b^2)sin2x+p(a^2-b^2)cos2x

=p/4(a^2-b^2)^2sin^2(2x)+p(a^2-b^2)cos2x


Discussion

No Comment Found

Related InterviewSolutions