In problems below, (a) identify the independent variable and the dependent variable of each equation (use 't' for the independent variable if an independent variable is not given explicitly); (b) give the order of each differential equation (enter '1' for first order, '2' for second order and so on; do not include the quotes); and (c) state whether the equation is linear or non-linear. Equation (a) Indpendent (a) Dependent (b) Order (c) Linear/Non-linear
y' = y - x2
xy' = 2y
x" + 5x = e-z