Learning Goal: To understand the concept of an integral as the area under a Figure a The function y=f(x)/ Ar b 4 of 4 Now, look at a general function f(x), as shown in (Figure 4). Suppose you want to find the area under the curve, between x = a and x = b-that is, the blue shaded area. Using our method above, we can add up the areas of lots of skinny rectangles like the green one. Each rectangle has area f(x)Ax, and we want to sum these areas between x = a and x = b, letting Ax get very small. Mathematically, you may recognize this sum as a definite integral: f(x) dx. The notation may look intimidating, but just keep in mind that the f(x)da refers to the small rectangle areas, the sign stands, in a sense, for the S in "sum" (that's actually how the symbol for integration was chosen), and the a and b at the bottom and top of give you the start and end of the region you're interested in. Thus, the definite integral få f(x) dx means the total area under the curve f(x) between x = a and x = b. For the function f(2) shown below, find the definite integral i f(x) dx. Express your answer numerically. f(x) 6 4 2 0 0 1 2 3 4
Learning Goal: To understand the concept of an integral as the area under a Figure a The function y=f(x)/ Ar b 4 of 4 Now, look at a general function f(x), as shown in (Figure 4). Suppose you want to find the area under the curve, between x = a and x = b-that is, the blue shaded area. Using our method above, we can add up the areas of lots of skinny rectangles like the green one. Each rectangle has area f(x)Ax, and we want to sum these areas between x = a and x = b, letting Ax get very small. Mathematically, you may recognize this sum as a definite integral: f(x) dx. The notation may look intimidating, but just keep in mind that the f(x)da refers to the small rectangle areas, the sign stands, in a sense, for the S in "sum" (that's actually how the symbol for integration was chosen), and the a and b at the bottom and top of give you the start and end of the region you're interested in. Thus, the definite integral få f(x) dx means the total area under the curve f(x) between x = a and x = b. For the function f(2) shown below, find the definite integral i f(x) dx. Express your answer numerically. f(x) 6 4 2 0 0 1 2 3 4
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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