Invalid Expression "3.57e2.1"

Just started learning MatLab, wondering why this command "3.57e2.1" or any decimal in the second number brings back an invalid expression error. Sorry for the basic question. Thanks

[madhan ravi]

What do you want e2.1 to represent?

[KSSV]

e power integers are allowed.

[Andrew Stepp]

I'm wanting to simplify 3.57*(10^2.1)

Answer 1

[madhan ravi]

You can’t use a decimal value for scientific notation.

[Andrew Stepp]

Interesting, thanks

Answer 2

[Star Strider]

You can certainly calculate it:

3.57*(10^2.1)

evaluated as:

4.494363720105178e+02

however you must do it as you wrote it, or as it is evaluated.