Group Abstract Group Abstract

Message Boards Message Boards

0
|
3.2K Views
|
3 Replies
|
4 Total Likes
View groups...
Share
Share this post:

Minimize beats Reduce in solving transcendental equation

This problem was posted on LinkedIn

In[1]:= Reduce[Log[5, x + 3] == Log[6, x + 14], x]

During the evaluation of In[1]:= Reduce::nsmet: This system cannot be solved with the methods available to Reduce.

Out[1]= Reduce[Log[3 + x]/Log[5] == Log[14 + x]/Log[6], x]

In[2]:= Minimize[(Log[5, x + 3] - Log[6, x + 14])^2, x]

Out[2]= {0, {x -> 22}}
POSTED BY: Frank Kampas
3 Replies
Posted 3 years ago
POSTED BY: Updating Name
Posted 3 years ago
Reduce[Log[5, x + 3] == Log[6, x + 14], x, Reals]
(* x == 22 *)
POSTED BY: Rohit Namjoshi

I would not have expected that fixing the type of the variable would enable a solution.

POSTED BY: Frank Kampas
Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Reply Preview
Attachments
Remove
or Discard