Question

Q 23) If u = x2 + y2 and x = at?, y = 2at then​

Answer 1

Step-by-step explanation:

x=at^2, y=2at

u=x^2+y^2

=(at^2)^2+(2at)^2

=a^2t^4+4à^2t^2

=a^2t^2(t^2+2)