question find the total area between the grap...
question find the total area between the graph of the function f(x)=|x - 1|-1, graphed below, and the x - axis over the interval -5,3.
Answer
# Explanation:
## Step1: Split the absolute - value function
The function \(y = |x - 1|-1\) can be written as a piece - wise function: \(y=\begin{cases}(x - 1)-1=x - 2, &x\geq1\\-(x - 1)-1=-x, &x<1\end{cases}\). We need to split the integral over the interval \([-5,3]\) at \(x = 1\).
## Step2: Calculate the integral over sub - intervals
We calculate the integral \(\int_{-5}^{3}| |x - 1|-1|dx=\int_{-5}^{0}(-(-x))dx+\int_{0}^{1}-(-x)dx+\int_{1}^{3}(x - 2)dx\).
First integral: \(\int_{-5}^{0}xdx=\left[\frac{x^{2}}{2}\right]_{-5}^{0}=0-\frac{(-5)^{2}}{2}=-\frac{25}{2}\), but we take the absolute value \(\left|\int_{-5}^{0}xdx\right|=\frac{25}{2}\).
Second integral: \(\int_{0}^{1}xdx=\left[\frac{x^{2}}{2}\right]_{0}^{1}=\frac{1}{2}\).
Third integral: \(\int_{1}^{3}(x - 2)dx=\left[\frac{x^{2}}{2}-2x\right]_{1}^{3}=(\frac{3^{2}}{2}-2\times3)-(\frac{1^{2}}{2}-2\times1)=(\frac{9}{2}-6)-(\frac{1}{2}-2)=\frac{9 - 12}{2}-\frac{1 - 4}{2}=-\frac{3}{2}+\frac{3}{2}=0\).
## Step3: Sum up the absolute values of the integrals
The total area \(A=\frac{25}{2}+\frac{1}{2}+0 = 13\).
# Answer:
13