math 215 Consider the equation $y' = y$, $y(0)=1$. The exact solution is $y(t) = e^t$. Complete the code below to implement Euler's method from $t_0 = 0$ to $t_f = 2$ with step size $h=2^{-k}$ where $k$ is the smallest positive integer such that the error at $t_f=2$ is less than $0.1$. Note that if $h=2^{-k}$ then $N=2^{k 1}$ in this case. Save the value $k$ as `k_1`