Q. Given the function h(x)=x2−6x+7, determine the average rate of change of the function over the interval 0≤x≤4.Answer:
Identify formula and interval: Identify the average rate of change formula and the interval over which it needs to be calculated.The average rate of change of a function h(x) over an interval [a,b] is given by the formula:Average rate of change = b−ah(b)−h(a)For the given function h(x)=x2−6x+7, we need to find the average rate of change over the interval [0,4].
Calculate h(x) at x=0: Calculate the value of h(x) at the beginning of the interval, which is x=0.Substitute x=0 into the function h(x):h(0)=(0)2−6(0)+7h(0)=0−0+7h(0)=7
Calculate h(x) at x=4: Calculate the value of h(x) at the end of the interval, which is x=4. Substitute x=4 into the function h(x): h(4)=(4)2−6(4)+7h(4)=16−24+7h(4)=−8+7h(4)=−1
Calculate average rate of change: Use the values from Step 2 and Step 3 to calculate the average rate of change over the interval [0,4].Average rate of change = (h(4)−h(0))/(4−0)Average rate of change = (−1−7)/(4−0)Average rate of change = (−8)/4Average rate of change = −2