Question

Question for genius rank and ace rank

Answer 1

Answer:

Substitute u=x−y, we get du/dx=1−dy/dx. The given equation can be written as 1−du/dx=cosu

⇒(1−cosu)=du/dx

⇒∫

1−cosu

du

=dx⇒

2

1

∫cosec

2

(u/2)du=dx

⇒x+cot(u/2)= const. or x+cot

2

x−y