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__    __     ___       _____   __   __   _    _   
\ \\ / //   / _ \\    / ___//  \ \\/ // | |  | || 
 \ \/ //   | / \ ||   \___ \\   \ ` //  | |/\| || 
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   \//      \___//   /____//     |_||   |_// \_|| 
    `       `---`   `-----`      `-`'   `-`   `-`

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Text this: On the solution of a class of function equation in plane geometry