Q. Given the function g(x)=x2−8x+14, determine the average rate of change of the function over the interval −1≤x≤10.Answer:
Identify formula and interval: Identify the average rate of change formula and the interval for the function g(x). The average rate of change of a function over an interval [a,b] is given by the formula: Average rate of change =b−ag(b)−g(a) For the function g(x)=x2−8x+14, we need to find the average rate of change over the interval [−1,10].
Calculate value at −1: Calculate the value of g(x) at the beginning of the interval, which is x=−1.Substitute x=−1 into the function g(x):g(−1)=(−1)2−8(−1)+14g(−1)=1+8+14g(−1)=23
Calculate value at 10: Calculate the value of g(x) at the end of the interval, which is x=10.Substitute x=10 into the function g(x):g(10)=(10)2−8(10)+14g(10)=100−80+14g(10)=34
Calculate average rate of change: Use the values from Step 2 and Step 3 to calculate the average rate of change over the interval [−1,10].Average rate of change = (g(10)−g(−1))/(10−(−1))Average rate of change = (34−23)/(10+1)Average rate of change = 11/11Average rate of change = 1