Question

\[\ \frac{1}{2x}+\frac{2}{180+x}+\frac{1}{180-x}\ge\frac{1}{45} \]

Answer 1

prove this...please help!!!

Answer 2

for 0<x<180...or tell a method..

Answer 3

restrictions x not can being equal 0,+ 180,-180 because than the fractions will be undefined

Answer 4

so after this you need getting the common denominator after assum these fractions and will get the interval values for x

Answer 5

the thing gets messy..i got a cubic after your advice...but then what? If we could use some inequalities (AM-GM) or else...it would be of great help!