Deriving integral=arctan

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In summary, the integral=arctan is a mathematical equation used in calculus to find the antiderivative of the arctangent function. It is important to derive this equation in order to solve more complex problems involving trigonometric functions and gain a better understanding of their relationship. To derive the integral=arctan, we use the substitution method and the fundamental theorem of calculus. This equation has many real-life applications in engineering and physics. Some tips for solving problems involving the integral=arctan include using the correct substitution, being familiar with the properties of the arctangent function, and practicing with different types of problems.
  • #1
Kalie
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Yeah this one is good...

Derive the following:

int(1/(x^2 + a^2)dx = 1/a*arctan(x/a) + C

any idea how I would derive this thing?
Cause I'm totally lost...
 
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  • #2
Well do you agree that if you show that the derivative of 1/a*arctan(x/a) + C is 1/(x^2 + a^2, then you will have attained your goal?
 
  • #3
fundamental theorem of calculus
 
  • #4
no he actually wants us to plow thorugh the intregal using subsitution and stuff and then somehow end up at the answer
 
  • #5
use the substitution [tex] x = a\tan \theta [/tex]
 

What is the integral=arctan?

The integral=arctan refers to a mathematical equation that involves finding the antiderivative of the arctangent function. It is commonly used in calculus to solve problems related to finding the area under a curve.

Why is it important to derive the integral=arctan?

Deriving the integral=arctan allows us to solve more complex problems involving trigonometric functions. It also helps us gain a better understanding of the relationship between the integral and arctangent functions.

What is the process of deriving the integral=arctan?

To derive the integral=arctan, we first use the substitution method to replace the variable in the integral with a new variable. Then, we use the fundamental theorem of calculus to solve the integral and find the antiderivative of the arctangent function.

What are some real-life applications of the integral=arctan?

The integral=arctan has many applications in engineering and physics, such as calculating the work done by a variable force, finding the center of mass of a curved object, and determining the force needed to bend a structure.

What are some tips for solving problems involving the integral=arctan?

Some tips for solving problems involving the integral=arctan include using the correct substitution, being familiar with the properties of the arctangent function, and practicing with different types of problems to improve problem-solving skills.

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