The indefinite integral and its "argument"

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SUMMARY

The discussion focuses on the indefinite integral of functions with specific arguments, particularly examining the forms of ##\cos(x^2)## and ##e^{\tan(x)}##. The argument for the cosine function is identified as ##x^2##, while for the exponential function, it is ##\tan(x)##. The integrand is expressed as ##f(g(x))##, leading to the integral form ##\int f(g(x)) \, dx##. The conversation also raises questions about integrating both functions simultaneously and the implications for their arguments.

PREREQUISITES
  • Understanding of indefinite integrals
  • Familiarity with function composition, specifically ##f(g(x))##
  • Knowledge of trigonometric functions, particularly ##\cos(x)##
  • Basic concepts of exponential functions and their arguments
NEXT STEPS
  • Study the integration techniques for composite functions
  • Learn about the Fundamental Theorem of Calculus
  • Explore integration by substitution, particularly for functions like ##\cos(x^2)## and ##e^{\tan(x)}##
  • Investigate the properties of exponential and trigonometric functions in calculus
USEFUL FOR

Students and educators in calculus, mathematicians focusing on integration techniques, and anyone seeking to deepen their understanding of function arguments in indefinite integrals.

Michael Santos
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Homework Statement


The indefinite integral $$\int \, $$ and it's argument.
The indefinite integral has a function of e.g ## \cos (x^2) \ ## or ## \ e^{tan (x)} \ ##
If the argument of ## \cos (x^2) \ ## is ## \ x^2 \ ## then the argument of ## \ e^{tan(x)} \ ## is ## \ x \ ## or ## \ tan (x) \ ## ?

Homework Equations

The Attempt at a Solution

 
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Hi,

Both are examples of the kind ##f\left( g(x)\right)\ ##.

The argument for ##f()##, the cosine function ##\cos()##, is ##x^2##, so ##g(x) = x^2##.

Similarly, the argument for exponentiation ## f() = \exp() \ ## is ##g(x) = \tan(x)##.

The integrand in both cases is ##f##, so you integrate ##\int f(g(x)) \, dx ##
 
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BvU said:
Hi,

Both are examples of the kind ##f\left( g(x)\right)\ ##.

The argument for ##f()##, the cosine function ##\cos()##, is ##x^2##, so ##g(x) = x^2##.

Similarly, the argument for exponentiation ## f() = \exp() \ ## is ##g(x) = \tan(x)##.

The integrand in both cases is ##f##, so you integrate ##\int f(g(x)) \, dx ##
What if both functions are to be integrated
BvU said:
Hi,

Both are examples of the kind ##f\left( g(x)\right)\ ##.

The argument for ##f()##, the cosine function ##\cos()##, is ##x^2##, so ##g(x) = x^2##.

Similarly, the argument for exponentiation ## f() = \exp() \ ## is ##g(x) = \tan(x)##.

The integrand in both cases is ##f##, so you integrate ##\int f(g(x)) \, dx ##
If both functions are to be integrated what is the argument to integrate?
 
Michael Santos said:
What if both functions are to be integrated
? Can you write the form of the integral that you mean ?
 

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