Q. What is the maximum vertical distance between the parabola y=3−x2 and the line y=x+1 for −2≤x≤1 ?
Find Parabola Vertex: First, let's find the vertex of the parabola y=3−x2, which is in the form y=a−x2 where a=3. The vertex of this parabola is at (0,3) since it's in the form y=a−x2 and the x-coordinate of the vertex is 0.
Calculate Line Y-value: Now, let's find the y-value of the line y=x+1 at x=0 to compare it with the vertex of the parabola.Substitute x=0 into y=x+1 to get y=0+1, which is y=1.
Calculate Vertical Distance at x=0: The vertical distance between the parabola and the line at x=0 is the absolute difference of their y-values.So, the distance at x=0 is ∣3−1∣=2.
Check Endpoints: We need to check the endpoints of the interval [−2,1] to ensure we find the maximum vertical distance.Let's substitute x=−2 into both equations to find their y-values.For the parabola, y=3−(−2)2=3−4=−1.For the line, y=(−2)+1=−1.
Calculate Vertical Distance at x=−2: The vertical distance between the parabola and the line at x=−2 is ∣(−1)−(−1)∣=0.
Calculate Vertical Distance at x=1: Now, let's substitute x=1 into both equations to find their y-values.For the parabola, y=3−(1)2=3−1=2.For the line, y=(1)+1=1+1=2.
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