Use the given graph of f over the interval (0, 7) to find the following. (a) The

Question

Use the given graph of f over the interval (0, 7) to find the following.

(a) The open intervals on which f is increasing. (Enter your answer using interval notation.)

(b) The open intervals on which f is decreasing. (Enter your answer using interval notation.)

(c) The open intervals on which f is concave upward. (Enter your answer using interval notation.)

(d) The open intervals on which f is concave downward. (Enter your answer using interval notation.)

(e) The coordinates of the points of inflection.

(x, y) =     (smallest x-value) (x, y) = (x, y) =     (largest x-value) The selectivities of a Li+ ion-selective electrode are indicated on the following diagram. Which alkali metal (Group 1) ion causes the most interference? (Select all that apply.) How much greater must be [K+] than [Li+] for the two ions to give equal response?

Explanation / Answer

a) (0,1) (3,5) (5,7)

b) (1,3)

c) (2,4) (5,7)

d) (0,2) (4,5)

e) (X = 2, Y = 2) (X = 4, Y = 3) (X = 5, Y = 4)

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