



Store




CTK Exchange
cyclone
guest

Feb2705, 07:50 PM (EST) 

"functions"

It's been too long, sorry but this a first post. 9th grade son needs to learn how to solve this function and I'm rusty. Don't need it'solved just a push in the right direction please. f(x)=(310x)/(10x^2 715x), find f(6) I'm thinking that I plug the 6 in for x then solve. Am I correct? Thanks an old man.... 

Alert  IP 
Printerfriendly page 
Reply 
Reply With Quote  Top 


alexb
Charter Member
1457 posts 
Feb2705, 07:54 PM (EST) 

1. "RE: functions"
In response to message #0

>9th grade son needs to learn how to solve this function and >I'm rusty. There must be something wrong with your terminology. Functions are not solved, equations are. Functions may be evaluated, simplified, multiplied, but not solved. >Don't need it'solved just a push in the right >direction please. > >f(x)=(310x)/(10x^2 715x), find f(6) If that is the question: find f(6), there is nothing to solved, but just compute f(6), i.e. evaluate f(x), as defined above, for x = 6. >I'm thinking that I plug the 6 in for x Just plug and calculate. > then solve. Nothing to solve here. > Am I correct? You are correct to mind your son's maths.


Alert  IP 
Printerfriendly page 
Reply 
Reply With Quote  Top 



Cino Hilliard
guest

Mar0105, 11:42 AM (EST) 

2. "RE: functions"
In response to message #1

>>9th grade son needs to learn how to solve this function and >>I'm rusty. > >There must be something wrong with your terminology. >Functions are not solved, equations are. Functions may be >evaluated, simplified, multiplied, but not solved. > >>Don't need it'solved just a push in the right >>direction please. >> >>f(x)=(310x)/(10x^2 715x), find f(6) > >If that is the question: find f(6), there is nothing to >solved, but just compute f(6), i.e. evaluate f(x), as >defined above, for x = 6. > >>I'm thinking that I plug the 6 in for x > >Just plug and calculate. > >> then solve. > >Nothing to solve here. > >> Am I correct? > >You are correct to mind your son's maths. From Encarta dictionary solve < solv > (past solved, past participle solved, present participle solv·ing, 3rd person present singular solves) transitive verb 1. deal with a problem successfully: to find a way of dealing successfully with a problem or difficulty
2. find answer to a puzzle: to find the answer to a question or puzzle 3. mathematics find answer to math problem: to work out the solution to an equation or other mathematical problem <15th century. From Latin solvere “to loosen, dissolve.”> Based on this I think the use of solve in the org poster's question is correct. Eg., solve f(x) = a is a valid statement. f(x) is a function so solve this function f(x)= a implies to solve the finction f(x)= a. I think you may have been a little hard on a first time poster. But, hey, rank has its privleges.:) Cino


Alert  IP 
Printerfriendly page 
Reply 
Reply With Quote  Top 




alexb
Charter Member
1457 posts 
Mar0105, 11:44 AM (EST) 

3. "RE: functions"
In response to message #2

>Eg., solve f(x) = a is a valid statement. f(x) is a function >so solve this function f(x)= a implies to solve the finction >f(x)= a. Right. Except there was not a question of solving f(x) = a. It was a question of evaluating f(x). >I think you may have been a little hard on a first time >poster. But, hey, rank has its privleges.:) Quite stupid. 

Alert  IP 
Printerfriendly page 
Reply 
Reply With Quote  Top 



You may be curious to have a look at the old CTK Exchange archive. Please do not post there.
Front page
Contents
Copyright © 19962018 Alexander Bogomolny

