Use Euler's method with \(h= 0.10 \) to approximate \(x( 0.20 )\) and \(y( 0.20 )\) given the following system of IVPs.

\[ x'= -3 \, t x^{2} - t y + 1 \hspace{2em} x( 0 )= 0 \]

\[ y'= 2 \, x y^{2} - 3 \, t y - 3 \hspace{2em} y( 0 )= -2 \]