
#1
Jun1204, 03:33 PM

P: 33

Thanks for your help....
How about this one? Using the definition of derivate find f ` (x) f(x) = x/(2x1) f ` (x) = lim h>0 [(f(x+h)) – (f(x))]/h lim h>0 ([((x+h) / (2x+2h1))(x/(2x1))]/h) . [((2x+2h1)(2x1)) / ((2x+2h1)(2x1))] lim h>0 [(2x^2)x+(2xh)h(2x^2)(2hx)+x]/(h(2x+2h1)(2x1)) lim h>0 h/(h(2x+2h1)(2x1)) = 1/(2x1)^2 



#2
Jun1204, 03:37 PM

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P: 12,016

If f(x)=x/(2x1), then it is correct.




#3
Jun1204, 03:42 PM

P: 33

yes...thanks




#4
Jun1204, 03:48 PM

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P: 12,016

Another Derivate
just a suggestion, ladyrae:
if you have more questions on this, don't open any new thread, continue to use this instead. In addition, try to learn LATEX formatting, it's not very difficult.. 


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