Question
Question 5(3 points) Let y = f ( t ), t {version:1.1,math: }0, be the solution to initial value problem y ' = y
Question 5(3 points)
Lety=f(t),t
{"version":"1.1","math":""}0, be the solution to initial value problemy'=y2
{"version":"1.1","math":""}a2,
{"version":"1.1","math":""}ay(0) =y0a> 0 is a constant.Which one of the following statements is true?
Question 5 options:
a)
y(t) is decreasing and its graph is concave up for allt
{"version":"1.1","math":""}0
b)
y(t) is increasing for allt
{"version":"1.1","math":""}0.There existst1> 0 such that the graph ofy(t) is concave up when 0 tt1, and it is concave down whent>t1.
c)
y(t) is decreasing for allt
{"version":"1.1","math":""}0.There existst1> 0 such that the graph ofy(t) is concave down when 0 tt1, and it is concave up whent>t1.
d)
y(t) is increasing and its graph is concave up for allt
{"version":"1.1","math":""}0
e)
y(t) is decreasing and its graph is concave down for allt
{"version":"1.1","math":""}0
f)
y(t) is increasing and its graph is concave down for allt
{"version":"1.1","math":""}0
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