- Thread starter
- #1

#### Avalance789

##### New member

- Nov 26, 2018

- 13

f(x)=ab^{x}

where b is a POSITIVE REAL number"

Wait. Give me a reason, why exponent base must be positive and real?

What happens if b<0?

- Thread starter Avalance789
- Start date

- Thread starter
- #1

- Nov 26, 2018

- 13

f(x)=ab^{x}

where b is a POSITIVE REAL number"

Wait. Give me a reason, why exponent base must be positive and real?

What happens if b<0?

- Aug 30, 2012

- 1,123

What happens if b = -1 and x = 1/2?

f(x)=ab^{x}

where b is a POSITIVE REAL number"

Wait. Give me a reason, why exponent base must be positive and real?

What happens if b<0?

-Dan

- Thread starter
- #3

- Nov 26, 2018

- 13

It means sqrt{-1}?

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- Mar 1, 2012

- 696

- Aug 30, 2012

- 1,123

Exactly. And as i is not real number we can't use it for what you seem to be working with.It means sqrt{-1}?

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-Dan

- Thread starter
- #6

- Nov 26, 2018

- 13

Thank you!

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