How to take derivative of transformed trigg functions

In summary, there is no specific formula for taking the derivative of transformed trigonometric functions, but the chain rule is often used. It is important to ensure that the derivatives of connected functions agree at their connection points. When modeling a roller coaster with multiple functions, it is best to adjust the slope of the rational function using vertical and horizontal scaling.
  • #1
Eng_physicist
30
0
I need general help in taking the derivative of transformed trig functions is there any formula I can use?

P.S Thanks in advanced
 
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  • #2
? Without further information, all I can say is the chain rule!
 
  • #3
HallsofIvy said:
? Without further information, all I can say is the chain rule!

Is there any general formula for it when using trigs
 
  • #4
Please give us some examples of the kind of functions you mean.
 
  • #6
gb7nash said:
Derivatives of trigonometric functions:

http://en.wikipedia.org/wiki/Differentiation_rules#Derivatives_of_trigonometric_functions

Chain Rule:

http://en.wikipedia.org/wiki/Chain_rule

I'm not sure I understand what your question is, but does that clear anything up?
O.K I have to model roller coaster by connecting three functions together the first has to be a polynomial then a trigg function which has to connect with a rational function and the point where they meet it's rate of change can not vary by more than 10%.
 
  • #7
Mark44 said:
Please give us some examples of the kind of functions you mean.

O.K I have to model roller coaster by connecting three functions together the first has to be a polynomial then a trigg function which has to connect with a rational function and the point where they meet it's rate of change can not vary by more than 10%
the problem is that I had to transform the trigg function to get it to connect with the Polynomial and rational functions but I don't know how to check it s rate of change where it connects with the rational function
 
  • #8
So you have a piecewise-defined function. At the two connection points, the y values have to agree, and you want the derivatives to approximately agree. Assuming that as we go left to right, you have 1) polynomial, 2) trig function, 3) rational function, and these functions are connected at points A and B, you want the derivative of the polynomial to be about the same as the derivative of the trig functions at A, and you want the derivative of the trig function to be about the same as that of the rational function at B.

For numbers to the left of and close to A, use the polynomial function's slope. For numbers to the right of and close to A, use the trig function's slope.

For numbers to the left of and close to B, use the trig function's slope. For numbers to the right of and close to B, use the rational function's slope.
 
  • #9
Mark44 said:
So you have a piecewise-defined function. At the two connection points, the y values have to agree, and you want the derivatives to approximately agree. Assuming that as we go left to right, you have 1) polynomial, 2) trig function, 3) rational function, and these functions are connected at points A and B, you want the derivative of the polynomial to be about the same as the derivative of the trig functions at A, and you want the derivative of the trig function to be about the same as that of the rational function at B.

For numbers to the left of and close to A, use the polynomial function's slope. For numbers to the right of and close to A, use the trig function's slope.

For numbers to the left of and close to B, use the trig function's slope. For numbers to the right of and close to B, use the rational function's slope.

Is there any particular way to adjust the slope of the rational function
Could I do a reverse derivative by making the slope of the rational function close to that of the trigg function in it's derivative form then turn it back into the non derivative form
 
  • #10
Eng_physicist said:
Is there any particular way to adjust the slope of the rational function
Could I do a reverse derivative by making the slope of the rational function close to that of the trigg function in it's derivative form then turn it back into the non derivative form
I don't see how that would work. The simplest rational function is y = f(x) = 1/x. You can stretch or compress it vertically by a scaling the y value, as in a*f(x) = a/x. You can stretch or compress it horizontally by a scaling x, as in f(cx) = 1/(cx). I think this is the way to go for your rational function.


BTW, "trig" is the usual short form of trigonometry.
 

What is a derivative of a transformed trigonometric function?

A derivative of a transformed trigonometric function is a mathematical concept that represents the rate of change of that function at a specific point. It is calculated by finding the slope of the tangent line at that point.

How do you find the derivative of a transformed trigonometric function?

To find the derivative of a transformed trigonometric function, you can use the chain rule, product rule, quotient rule, or any combination of these rules. It is important to follow the correct order of operations and use the trigonometric identities to simplify the function before taking the derivative.

What are some common transformed trigonometric functions?

Some common transformed trigonometric functions include sine, cosine, tangent, secant, cosecant, and cotangent. These functions can be transformed using amplitudes, phase shifts, and frequency changes.

Why is taking the derivative of transformed trigonometric functions important?

Taking the derivative of transformed trigonometric functions is important in many fields of science and engineering, as it allows us to analyze and understand the behavior of these functions. It is also used in applications such as optimization, curve fitting, and solving differential equations.

What are some tips for taking derivatives of transformed trigonometric functions?

Some tips for taking derivatives of transformed trigonometric functions include using the correct rules and formulas, simplifying the function before taking the derivative, and being familiar with the properties of trigonometric functions. It is also helpful to practice and check your work with a calculator or online tool.

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