Undergraduate

Example ( a ) You are given the following information about a function f ( x ) : f ( x ) = - 3

Example
(a) You are given the following information about a function f(x) :
f(x)=-3x515x4-5x3-45x2-20
f'(x)=-15x(x-2)(x-3)(x1)
f''(x)=30(1-x)(2x2-4x-3)
Describe all intervals on which f(x) is increasing or decreasing. Identify any maxima or minima (x-coordinates only), and indicate whether they are local or global extrema. Be sure to support your answers.
(b) You are given the following function g(x) :
g(x)=3x4-4x3
Describe all intervals on which g(x) is concave up or concave down. Identify any inflection points (x-coordinates only). Be sure to support your answers.
(c) Draw a graph of a function h(x) that passes through the points (1,3) and (3,0) and meets the following requirements. Note that there are many possible graphs that would meet these conditions; you are only being asked to sketch one such graph. Be sure to label maxima, minima, point(s) of inflection, and any other features of interest on your graph.
h(1) is a global maximum value
h'(x)>0 over (-,1)(3,);,h'(x)<0 over (1,3);,h'(1)=0=h'(3)
h''(x)>0 over (2,4);,h''(x)<0 over (-,2)(4,);,h''(2)=0=h''(4)

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