<exercise checkit-seed="0002" checkit-slug="AA3" checkit-title="Euler's Method">
<statement>
<p>
Show how to use Euler's method with two steps to approximate
<m>x(-0.40)</m> given the following
IVP.
</p>
<me>
x'=-4 \, t^{2} x^{2} + 2 \, t^{2};\qquad
x(-1)=1
</me>
</statement>
<answer>
<ul>
<li>
<m>x(-0.70)\approx 0.400</m>
</li>
<li>
<m>x(-0.40)\approx 0.600</m>
</li>
</ul>
</answer>
</exercise>