Coefficient[expr, form]
Coefficient[expr, form, n]
Coefficient[(x + y)^4, (x^2) * (y^2)]
Coefficient[a x^2 + b y^3 + c x + d y + 5, x]
Coefficient[(x + 3 y)^5, x]
Coefficient[(x + 3 y)^5, x * y^4]
Coefficient[(x + 2)/(y - 3) + (x + 3)/(y - 2), x]
Coefficient[x*Cos[x + 3] + 6*y, x]
Coefficient[(x + 1)^3, x, 2]
Coefficient[a x^2 + b y^3 + c x + d y + 5, y, 3]
Find the free term in a polynomial:
Coefficient[(x + 2)^3 + (x + 3)^2, x, 0]
Coefficient[(x + 2)^3 + (x + 3)^2, y, 0]
Coefficient[a x^2 + b y^3 + c x + d y + 5, x, 0]