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## Main Question or Discussion Point

In mathematical Induction, sometimes two variables are given, such as:

"All positive integers n and all real numbers x >= -1."

My question is do you solve this normally and just keep x as itself or do you have to expand it like you do with n, making it k + 1 etc etc.

Thanks in advanced

"All positive integers n and all real numbers x >= -1."

My question is do you solve this normally and just keep x as itself or do you have to expand it like you do with n, making it k + 1 etc etc.

Thanks in advanced