WS 5.3: Euler’s Method
Calculus Maximus
9. AP 2002-5 (No Calculator)
dy
Consider the differential equation:
.
2
y
4
x
dx
(a) The slope field for the given differential equation is provided. Sketch the solution curve that passes
.
through the point
0,1 and sketch the solution curve that passes through the point
0, 1
.
(b) Let f be the function that satisfies the given differential equation with the initial condition
f
0
1
x
Use Euler’s method, starting at
0
with a step size of 0.1 , to approximate
f
0.2
. Show the
work that leads to your answer.
(c) Find the value of b for which
y
2
x b
is a solution to the given differential equation. Justify your
answer.
(d) Let g be the function that satisfies the given differential equation with the initial condition
. Does the graph of g have a local extremum at the point
g
0
0
0, 0 ? If so, is the point a local
maximum or a local minimum? Justify your answer.
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