What is the simplified form of the integral (csc^4 3\theta)(tan^4 3\theta)?

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In summary, a simple integral question refers to a mathematical problem that involves finding the area under a curve or the accumulation of a quantity over a given interval. To solve it, you can use methods such as substitution, integration by parts, and trigonometric substitution. These questions have various real-world applications and can have multiple solutions. However, all solutions should be equivalent and differ only by a constant. Some common mistakes to avoid when solving simple integral questions are forgetting to add the constant of integration, incorrect substitution or integration by parts, and not simplifying the resulting expression. It is also important to check for any possible errors in algebra or arithmetic.
  • #1
rjs123
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Homework Statement



[tex]\int\sec^4 3\theta[/tex]
 
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  • #2
Have you tried anything? Hint d/dt(tan(t)) = sec2(t)
 
  • #3
Hint:

[tex]
\sec^{4}{(3 \theta)} = \sec^{2}{(3 \theta)} \, \sec^{2}{(3 \theta)} =
(1 + \tan^{2}{(3 \theta)}) \, \sec^{2}{(3 \,\theta)}
[/tex]

and use the substitution:

[tex]
x = \tan{(3 \theta)}
[/tex]
 
  • #4
thanks guys...i knew it was something simple.

The original problem was:

[tex]\int(csc^4 3\theta)(tan^4 3\theta)[/tex]

simplified this to:

[tex]\int\sec^4 3\theta[/tex]

and now i know how easy the rest was.
 

FAQ: What is the simplified form of the integral (csc^4 3\theta)(tan^4 3\theta)?

What is a simple integral question?

A simple integral question refers to a mathematical problem that involves the calculation of an integral, which is the inverse operation of differentiation. It typically involves finding the area under a curve or the accumulation of a quantity over a given interval.

How do I solve a simple integral question?

To solve a simple integral question, you can use various methods such as substitution, integration by parts, and trigonometric substitution. The general steps for solving an integral are to identify the function being integrated, determine the appropriate method to use, and then apply the fundamental theorem of calculus to evaluate the integral.

What are the applications of simple integral questions?

Simple integral questions have many real-world applications, including calculating the distance traveled by an object, finding the average value of a function, and determining the volume of a solid. They are also used in physics, engineering, and economics to solve various problems involving rates of change and accumulation.

Can a simple integral question have multiple solutions?

Yes, a simple integral question can have multiple solutions. This is because there can be different approaches or methods to solve the same integral, and each method can yield a different result. However, all the solutions should be equivalent and differ only by a constant.

What are some common mistakes to avoid when solving simple integral questions?

Some common mistakes to avoid when solving simple integral questions are forgetting to add the constant of integration, incorrect substitution or integration by parts, and not simplifying the resulting expression. It is also essential to check for any possible errors in algebra or arithmetic.

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