In: Math
Solve the following Differential Equation
a. ?′ = sec ? cot ?
b. ?′ = ??-y(cos(?2)) ; ?(0) = 0
c. ?′ = ?(2 − ?)
d. ?2 + dy/dx = (y2 )/(1+x2) ; ?(0) = 1 also find the solution where ?(0) = 0