-(u + u?) the wec du If U + X dx du u + utu2 1 da true false sin x dy dx + y(cos x) = 1 then IF :Select on sin x COS X COS X e-sin a 1 = y= u 3 where u = u(x) then Select one 4 - $ u(x) .a ju 3 0 .b - u 2 3 . 4 -udu .d - U 3 dx