Quiz 3.2

Quiz 3.2 - 1)...

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1 ) Determine where the second derivative of function #2 is positive and  where it is negative. (5pts)   f''(x)>0 for -4<-2. f''(x)<0 for -2<1.   f''(x)>0 for -4<-2; x>1. f''(x)<0 for x<-4; -2<1.   f''(x)>0 for x<-4; -2<1. f''(x)<0 for -4<-2; x>1.   f''(x)>0 for -2<1. f''(x)<0 for -4<-2. Answer : Incorrec t Points: 0 2 ) Determine where the graph of function #12 is concave upward and  concave downward. (5pts)   x<0; concave down. 0<5; concave down. x>5; concave up.   x<0; concave down. 0<5; concave up. x>5; concave down.   x<0; concave up. 0<5; concave up. x>5; concave down.   x<0; concave up. 0<5; concave down. x>5; concave up. Answer : Corre ct Points: 5 3 ) Determine where the graph of function #6 is concave upward and  concave downward. (5pts)   x<0; concave up. 0<2; concave up. x>2; concave up.   x<0; concave down. 0<2; concave up. x>2; concave down.   x<0; concave up. 0<2; concave down. x>2; concave up.
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  x<0; concave down. 0<2; concave down. x>2; concave down. Answer : Incorrec t Points: 0 4 ) Determine where function #18 is increasing and decreasing, and  where its graph is concave up and concave down. (5pts)   Increases on x<-1, x>1. Decreases on -1<1. Concave up on x<0.  Concave down on x>0.  
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