How Do You Find the Derivatives of These Trigonometric Functions?

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Homework Help Overview

The discussion revolves around finding the derivatives of various trigonometric functions, specifically focusing on the differentiation of expressions involving cosine, tangent, and sine functions. The original poster expresses difficulty in understanding trigonometric functions and seeks assistance with their assignment.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants inquire about the original poster's understanding of differentiation and the chain rule. There are requests for clarification on specific problems, particularly numbers 2 and 4, and discussions about the lack of prior instruction on derivatives.

Discussion Status

The discussion highlights a lack of foundational knowledge regarding derivatives, with some participants questioning the appropriateness of the assignment given the original poster's stated difficulties. Guidance has been offered regarding the chain rule, but no consensus or clear solutions have emerged.

Contextual Notes

There is mention of the original poster's teacher not having covered the topic yet, leading to confusion and a request for help before the assignment is due.

nephi37
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find the derivatives

of differentiation of trigonometric functions

1. y=cos(3x^2+8x-2)

2. y=tan^3 2x

3. y=sin5x sin^5 x

4. y=Square root of 4sin^2x+9cos^2x

help here please..

i can't understand trigonometric functions
 
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Welcome to PF.

Please only post one or two questions per thread.

Show us what you've tried.

Where are you stuck?
 
thank you summy

our teacher didn't teach us.. and don't have any idea to solve this..

Can u help me please, at least 2 of them :)

thank you very much
 
The derivative of cos(x) is -sin(x) .

Do you know the chain rule?
 
i don't have any background with that sammy

can u help me with number 3 and number 4

please help me.. its our assignment and will be pass tom :)
 
Excuse me? You have never been taught anything about derivatives of trig functions yet you are given an assignment like this? You should complain to your teacher's superior.
 
yes. she didn't taught us.. because she will discuss it to us tomorrow..

please help me :)
 
help plssss..

2 and 4 please.. I am searching in google..

but i can't get the logic..

im not good in math so please help...
 
Do you know the chain rule.

Can you find the derivative of

(3x2+8x-2)1/2 ?
 
  • #10
This thread is locked as a result of nephi37's refusal to follow our guidelines and provide an attempted solution.
 

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