Menu Close

Question-218256




Question Number 218256 by mr W last updated on 03/Apr/25
Answered by efronzo1 last updated on 03/Apr/25
  f(3)+f(−(1/2))= 72   f(−(1/2))+ f((2/3))=−12   f((2/3))+ f(3) = 16    2{f(3)+ f(−(1/2))+ f((2/3))} = 76    f(3)+ (−12) = 38    f(3) = 50
$$\:\:\mathrm{f}\left(\mathrm{3}\right)+\mathrm{f}\left(−\frac{\mathrm{1}}{\mathrm{2}}\right)=\:\mathrm{72} \\ $$$$\:\mathrm{f}\left(−\frac{\mathrm{1}}{\mathrm{2}}\right)+\:\mathrm{f}\left(\frac{\mathrm{2}}{\mathrm{3}}\right)=−\mathrm{12} \\ $$$$\:\mathrm{f}\left(\frac{\mathrm{2}}{\mathrm{3}}\right)+\:\mathrm{f}\left(\mathrm{3}\right)\:=\:\mathrm{16} \\ $$$$\:\:\mathrm{2}\left\{\mathrm{f}\left(\mathrm{3}\right)+\:\mathrm{f}\left(−\frac{\mathrm{1}}{\mathrm{2}}\right)+\:\mathrm{f}\left(\frac{\mathrm{2}}{\mathrm{3}}\right)\right\}\:=\:\mathrm{76} \\ $$$$\:\:\mathrm{f}\left(\mathrm{3}\right)+\:\left(−\mathrm{12}\right)\:=\:\mathrm{38} \\ $$$$\:\:\mathrm{f}\left(\mathrm{3}\right)\:=\:\mathrm{50} \\ $$
Commented by mr W last updated on 04/Apr/25
thanks!
$${thanks}! \\ $$
Answered by mahdipoor last updated on 03/Apr/25
f(x)+f((1/(1−x)))=24x  f((1/(1−x)))+f(((1−x)/(−x)))=((24)/(1−x))  f(((1−x)/(−x)))+f(x)=((24(1−x))/(−x))  ⇒⇒f(x)=12(x+(1/(1−x))−((1−x)/x))
$${f}\left({x}\right)+{f}\left(\frac{\mathrm{1}}{\mathrm{1}−{x}}\right)=\mathrm{24}{x} \\ $$$${f}\left(\frac{\mathrm{1}}{\mathrm{1}−{x}}\right)+{f}\left(\frac{\mathrm{1}−{x}}{−{x}}\right)=\frac{\mathrm{24}}{\mathrm{1}−{x}} \\ $$$${f}\left(\frac{\mathrm{1}−{x}}{−{x}}\right)+{f}\left({x}\right)=\frac{\mathrm{24}\left(\mathrm{1}−{x}\right)}{−{x}} \\ $$$$\Rightarrow\Rightarrow{f}\left({x}\right)=\mathrm{12}\left({x}+\frac{\mathrm{1}}{\mathrm{1}−{x}}−\frac{\mathrm{1}−{x}}{{x}}\right) \\ $$
Commented by mr W last updated on 04/Apr/25
thanks!
$${thanks}! \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *