Learn the Chain Rule for Finding the Derivative of e^sec(x) | Homework Question

  • Thread starter Thread starter alpha01
  • Start date Start date
  • Tags Tags
    Chain Chain rule
Click For Summary
The derivative of e^sec(x) is calculated using the chain rule. By letting u = sec(x) and y = e^u, the derivatives are found as du/dx = tan(x)sec(x) and dy/du = e^u. The final derivative is expressed as dy/dx = e^sec(x)tan(x)sec(x). The solution is confirmed as correct by participants in the discussion. This method effectively applies the chain rule to find the derivative of the given function.
alpha01
Messages
77
Reaction score
0

Homework Statement

derivative of esec(x)

The Attempt at a Solution

u = sec(x)
y = eu

du/dx = tan(x)sec(x)
dy/du = eu

dy/dx = dy/du * du/dx
= esec(x)tan(x)sec(x)
 
Physics news on Phys.org
alpha01 said:

Homework Statement




derivative of esec(x)



The Attempt at a Solution




u = sec(x)
y = eu

du/dx = tan(x)sec(x)
dy/du = eu

dy/dx = dy/du * du/dx
= esec(x)tan(x)sec(x)
Looks good to me :approve:
 
thanks
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

Similar threads

  • · Replies 7 ·
Replies
7
Views
1K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 28 ·
Replies
28
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 13 ·
Replies
13
Views
2K