How Similar Are the Integrals of e^(cos(t)-t)/5 and e^(-t/5)?

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In summary, The integral of e is an important function that allows us to find the area under the curve of e, with many real-world applications. Some techniques for solving it include integration by substitution, integration by parts, and partial fraction decomposition, and the general formula is ∫e^x dx = e^x + C. Special cases include when the exponent is a constant or when definite integration is involved.
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ns5032
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I'm in the middle of a LONG problem and came across a part where I need to do this integral:

integral of: e^[(cos(t)-t)/5]

Please help!
 
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  • #2
I'm pretty sure you need to solve this numerically. Is that acceptable for the problem?
 
  • #3
It's very amusing to consider instead the function
[tex]
e^{-t/5}
[/tex]
It looks almost just like your function but with a few less little "fine structure" wiggles.

The integrals of both functions should be rather similar. For example
[tex]
\int_0^{\infty} e^{(-t/5)}=5
[/tex]
whereas
[tex]
\int_0^{\infty}e^{(Cos[t]-t)/5}\approx 5.09
[/tex]
 

FAQ: How Similar Are the Integrals of e^(cos(t)-t)/5 and e^(-t/5)?

What is the integral of e?

The integral of e is the function that, when differentiated, gives the function e. It is represented by the symbol ∫e^x dx.

Why is solving the integral of e important?

Solving the integral of e is important because it allows us to find the area under the curve of the function e, which has many real-world applications in fields such as physics, engineering, and economics.

What are some techniques for solving the integral of e?

Some techniques for solving the integral of e include integration by substitution, integration by parts, and partial fraction decomposition. It is also helpful to have a good understanding of basic integration rules and properties.

What is the general formula for solving the integral of e^x?

The general formula for solving the integral of e^x is ∫e^x dx = e^x + C, where C is the constant of integration. This formula is known as the antiderivative or the indefinite integral of e^x.

Are there any special cases when solving the integral of e?

Yes, there are some special cases when solving the integral of e. For example, when the exponent is a constant, such as e^2x, we can use a different set of techniques, such as u-substitution or the power rule for integration. Additionally, when the limits of integration are given, we can use the definite integral formula to solve the integral of e.

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