Math

QuestionPlot the piecewise function g(x)={6if x<2(x+1)2if x2g(x) = \begin{cases} -6 & \text{if } x < -2 \\ (x+1)^{2} & \text{if } x \geq -2 \end{cases} and identify where it increases or decreases.

Studdy Solution

STEP 1

Assumptions1. The function is defined piecewise with two pieces - g(x)=6g(x) = -6 for x<x < - - g(x)=(x+1)g(x) = (x+1)^{} for xx \geq - . We need to plot the function and find the intervals where the function is increasing and decreasing.

STEP 2

First, let's plot the function. We'll start by plotting the piece g(x)=6g(x) = -6 for x<2x < -2. This is a constant function and will be a horizontal line at y=6y = -6 for all x<2x < -2.

STEP 3

Next, we'll plot the piece g(x)=(x+1)2g(x) = (x+1)^{2} for x2x \geq -2. This is a quadratic function and will be a parabola opening upwards with the vertex at x=1x = -1.

STEP 4

Now that we have the plot, let's find the intervals where the function is increasing and decreasing.

STEP 5

For the first piece g(x)=g(x) = - for x<2x < -2, the function is constant and hence neither increasing nor decreasing.

STEP 6

For the second piece g(x)=(x+1)2g(x) = (x+1)^{2} for x2x \geq -2, the function is a parabola opening upwards. Hence, it is decreasing for x<1x < -1 and increasing for x>1x > -1.

STEP 7

However, we need to consider that this piece is only defined for x2x \geq -2. Hence, the function is decreasing for 2x<1-2 \leq x < -1 and increasing for x>1x > -1.
So, the function is decreasing in the interval [2,1)[-2, -1) and increasing in the interval (1,)(-1, \infty).

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