True False. y ' + y = x y³ is a Bernoulli DE.

True False. x² + y² -25 = 0 is an implicit solution of : x dx + y dy = 0.

True False. (x² + y²) dx + 2xy dy = 0 is a separable DE.

True False. The substitution v = y^1-n is mainly used for homogeneous DEs.

True False. Every DE with linear coefficients is a linear DE.

True False. (x² -3y²) dx + 2xy dy = 0 is a homogeneous DE.

True False. For 1st order linear DEs, we apply an integrating factor.

True False. Every DE of the form y ' = f(x,y) has a solution.

True False. The method of grouping is for exact DE's.

True False. Separable DEs should be transformed into homogeneous DEs.

Written by S.Hudson 9/02