- #1
vkash
- 318
- 1
Homework Statement
tan-1[2x/(1-x2)]+cot-1[(1-x2)/2x]=2π/3
2. The attempt at a solution
tan-1[2x/(1-x2)]+cot-1[(1-x2)/2x]=2π/3
tan-1[2x/(1-x2)]=2π/6
take tan on both sides
2x/(1-x2) =sqrt(3)
quadratic equation so it should have 2 solutions(sqrt(3) and sqrt(1/3)).But this question has four solution.. Where am i missing solutions. Can you please help me to figure out the error..
thanks
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vikash