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1-For what values of x is the function f(x)=-x2-2x+15 decreasing?
A)(-infinity,-2]. B)(-infinity,-1) C)[-2,infinity) D)(-1, infinity)
2-For what values of x is the function f(x)=1/2x(x2-3x-9)
decreasing?
A)(-3,1) B) (-1, 3) C)[-1, 3] D)(-infinity,-1)union(3, infinity)
3-For what values of x is the function f(x)=4x2+4x-3 increasing?
A)(-infinity,-1/2) B)(-infinity,-1/2]. C)(-1/2, infinity). D)[-1/2, infinity)
4-For what values of x is the function
F(x)=4x3+12x2-3 concave down ?
A)(-infinity,-1) B)(-infinity,-2). C)(-1, infinity). D)(-2, infinity)
5-For what values of x is the function f(x)=4x3+12x2-3 concave up?
A)(-infinity,-1) B)(-infinity,-2). C)(-1, infinity). D)(-2, infinity)
6- The critical values of f(x) = x+ 1/x is
A) {0} B) {1,-3} C){1,-1} D){2,-2})
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