\magnification = \magstep1 \nopagenumbers \leftline{Mathematics 134 -- Intensive Calculus for Science 2} \leftline{Quiz 7 -- March 31, 2006} \medskip \leftline{Your Name: $\underline{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }$} \bigskip \noindent Do all work on this sheet (front and back). You have 15 minutes. {\it No calculators on this quiz.} \bigskip \noindent A) (10) For which value(s) of the constant $c$ is $y = c + e^{4x}$ a solution of ${dy\over dx} = 4y - 8$? \vglue 2.0truein \bigskip \noindent B) (10) The following plot shows the slope field for the differential equation ${dy\over dx} = 3x - 2y$. On the plot, roughly sketch in the graphs of the solutions with $y(0) = 2$ and $y(0) = -2$. \vglue 4.0truein \noindent {\it Please turn over for question C} \vfill\eject \noindent C) (5) Do two steps of Euler's Method with $\Delta x$ = .5 to approximate the solution of ${dy\over dx} = 2y$ with $y(0) = 1$. \bye