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I have a basic question.

If I have an expression(Polynomial,logarithm,etc.) and it is told to me it's an equation, but it's is not written to what it's equal to, do we consider it by convention equal to 0 ???

For a certain reason, I don't remember this xD

Thank you !

  • You assume nothing. The author of the question made a mistake. – Rocket Man Nov 12 '13 at 18:45
  • I think your wording is correct. It's just an expression! I also don't believe that it's convention to set it equal to zero, unless the situation warrants otherwise. For example, if $f(t)$ is some expression in the variable $t$ which gives the height of an object at time $t$ and the question asks when does the height reach 3 (meters, say), then you equate the equation $f(t)=3$. – Tom Nov 12 '13 at 18:45
  • Ok, that's what I thought. THe author made a mistake because he gives a logarithmic expression and says it's an equation but doesn't put any equal sign or value. –  Nov 12 '13 at 18:48

1 Answers1

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An equation equates. An expression merely expresses.

You don't have an equation. You have an expression.

There's no "default value" for an expression.

John
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