Fundamental Theorem of Calculus

In summary, the conversation discusses determining whether a function, F(x), has a maximum or minimum value, given the equation F(x) = ∫ cos (1+t^2)^-1) from 0 to 2x - x^2. The individual attempted to find the derivative, F'(x), and is now seeking help on finding the second derivative, F''(x), in order to determine whether the function has a maximum or minimum value.
  • #1
inter060708
24
0

Homework Statement



F(x) = ∫ cos (1+t^2)^-1) from 0 to 2x - x^2

Determine whether F has maximum or minimum value

Homework Equations





The Attempt at a Solution


I tried finding
F'(x) = Dx (∫ cos (1+t^2)^-1) from 0 to 2x - x^2)
= (2-2x)cos[(1+(2x-x^2))^-1]

What do I do next? equate F'(x) = 0 and find F''(x) ?

Please help. Thank you.
 
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  • #2
Hey inter060708 and welcome to the forums.

Turning points happen when the derivative is zero, and the second-derivative (unless it's an inflexion point) will determine whether something is a minimum of maximum based on the sign.

Remember that the second derivative says how fast the derivative is changing, so if it is negative then it means you have a maximum and if it's positive it means a minimum since the derivative (which is the rate of change) will be either 'going negative' or 'going positive'.

So the first thing you need to do is find F'(x) = 0 and take it from there.
 

1. What is the Fundamental Theorem of Calculus?

The Fundamental Theorem of Calculus is a fundamental concept in calculus that connects the two main branches of calculus - differential and integral calculus. It states that the integral of a function can be computed by finding the antiderivative of the function and evaluating it at the upper and lower limits of the integral.

2. What is the significance of the Fundamental Theorem of Calculus?

The Fundamental Theorem of Calculus is significant because it provides a powerful tool for evaluating integrals. It allows us to solve problems that would be very difficult or impossible to solve using basic integration techniques. It also provides a deeper understanding of the relationship between derivatives and integrals.

3. What are the two parts of the Fundamental Theorem of Calculus?

The first part of the Fundamental Theorem of Calculus states that if a function is continuous on a closed interval, then the integral of the function over that interval can be evaluated by finding the antiderivative of the function and evaluating it at the upper and lower limits of the integral. The second part states that if a function is differentiable on an open interval, then the derivative of the integral of the function is equal to the original function.

4. How is the Fundamental Theorem of Calculus used in real-world applications?

The Fundamental Theorem of Calculus has many real-world applications, particularly in the fields of physics and engineering. It is used to solve problems involving areas, volumes, and rates of change. For example, it can be used to find the velocity of an object by taking the derivative of its position function, or to calculate the amount of water that flows through a pipe by taking the integral of the fluid's velocity function.

5. Are there any limitations to the Fundamental Theorem of Calculus?

While the Fundamental Theorem of Calculus is a powerful tool, it does have some limitations. It only applies to functions that are continuous on a closed interval and differentiable on an open interval. It also does not provide a method for finding the antiderivative of every function, so some integrals may still be difficult to solve using this theorem alone.

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