Thread: Finding real solutions

For what values of c does the following equation have at least one real solution?

Originally Posted by Saphira

For what values of c does the following equation have at least one real solution?

You want

Are we assuming ?

Are we assuming ?

The value of c is not specified, so I'm guessing, yes.

Originally Posted by Plato

You want

Thanks!

Okay, have you considered the Quadratic Formula and the implications of the radical?

Originally Posted by Saphira

For what values of c does the following equation have at least one real solution?

1. c is positive since otherwise is not real and I presume we want it to be real.

2. Rewrite the equation:



What does Descartes rule of signs tell you when .

CB