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Look Ma, no integrals! (Posted on 2006-05-02) Difficulty: 3 of 5
The professor wrote the differential equation f/f'=1 on the blackboard, and asked the students to solve it.

Everybody started working with the usual methods, except for a kid at the back of the class, who happened to have skipped that material, but was very bright.

Can you solve this equation without any integration?

See The Solution Submitted by Federico Kereki    
Rating: 3.7500 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts re: Observations and maybe solution | Comment 2 of 14 |
(In reply to Observations and maybe solution by Richard)

Sorry, no cigar. When you went from -(1/f)'=1 to -1/f=x+c, you integrated...
  Posted by Federico Kereki on 2006-05-02 15:41:30

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