Please tell me last 2 questions it's urgent
Prove by mathematical induction 13 + 23 + 33 + …..n3 = 2 2 ( 1) n n
Evaluate , , so that the vector F ⃗ is given by F ⃗= (2x + 3y + az)ı ⃗+ (bx + 2y + 3z)ȷ ⃗ + (2x + cy + 3z)k ⃗ is irrotational