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)Δx , and we want to sum these areas between x=a and x=b , letting Δx get very small. Mathematically, you may recognize this sum as a definite integral: ∫baf(x)dx .

The notation may look intimidating, but just keep in mind that the f(x)dx 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 ∫ba give you the start and end of the region you’re interested in. Thus, the definite integral ∫baf(x)dx means the total area under the curve f(x) between x=a and x=b . For the function f(x) shown below, find the definite integral ∫41f(x)dx .


Respuesta :

The magnitude of force area under the curve is 15m². The area under the curve notion was utilized to address this problem by calculating the integration method.

What is the explanation for the above?

Any equation may represent any curve or straight line. The specified trajectory is a straight line in this case.

To begin, create an equation as a function of x that expresses the trajectory. Later, to obtain the area under the curve, integrate the equation within the appropriate limit.

The curve's equation is constant. Hence, the curve is represented by the following equation:

y = f(x) = c

Where c is the constant.

The area under the curve is expressed with proper limits as:

A = [tex]\int\limits^y_x {Y} \, dx[/tex]

Where A = Area under the curve

x  = lower limit of the integration and

y = upper limit of the equation.

Step 1 - Equation of the Curve

The equation of the curve is given as:

y = f(x) = c

Where c = 5,

y = f(x) =5

Step 2 - The expression of the area under the curve is given as;

A = [tex]\int\limits^y_x {Y} \, dx[/tex]

Here , let

1 = x, and

4 = y; and

5 - Y

Hence,

A = [tex]\int\limits^4_1 {5} \, dx[/tex]

= 5 x (4-1)

= 5 x 3

A = 15m²

During the limit, the curve's equation remains constant.

The area under the curve may be calculated using the integration technique with the correct limit of the curve's equation.

The force area beneath the curve has a magnitude of 15m².

Learn more about area under the curve:
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