perplexus.info :: Just Math : Range

Range (Posted on 2021-09-20)

Let x, y are real numbers such that x²+2cos(y)=1. Find the range of x-cos(y).

No Solution Yet Submitted by Danish Ahmed Khan

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Puzzle Answer

Comment 4 of 4 |

The required range of x -cos(y) is:

(-1, 1+V3).

*** Will try my best to come up with an independent explanation of my own.

Posted by K Sengupta on 2022-06-30 00:21:44

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