Q. The graph of function h follows. Let f(x)=∫−1xh(t)dt.Evaluate f(4).f(4)=
Substitute x with 4: Substitute x with 4 in the function f(x).f(4)=∫−14h(t)dt
Graph of h(t): Look at the graph of h(t) to find the area under the curve from −1 to 4. The graph shows a triangle from −1 to 0 and a rectangle from 0 to 4.
Calculate triangle area: Calculate the area of the triangle.Area of triangle = 21×base×heightBase = 1 (from −1 to 0), height = 2 (from the x-axis to the peak of the triangle)Area\_triangle = 21×1×2=1
Calculate rectangle area: Calculate the area of the rectangle.Area of rectangle = length×widthLength = 4 (from 0 to 4), width = 2 (from the x-axis to the top of the rectangle)Area\_rectangle = 4×2=8
Find total area: Add the areas of the triangle and rectangle to find the total area under the curve.Total area = Areatriangle+ArearectangleTotal area = 1+8=9
Total area under the curve: The total area under the curve from −1 to 4 is the value of f(4). f(4)=9
More problems from Evaluate rational expressions II