how do I do this equation

Ron H said:

That's why I like my old HP15C (which stays at work). RPN, no parentheses or brackets required.
The calculator I use here at home when sitting at my computer is an **broken link removed**.

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eblc1388 said:

One don't just like RPN, one is addicted to it. I HAVE to use a RPN even I have several other non RPN types.

I feel very uncomfortable if I am forced to use a non-RPN type and have to write down the immediate results I already worked out. No such worry with a RPN.

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Pommie said:

You shouldn't have to enter the brackets. You should have a key to enter the exponent. It is usually labeled E or Exp. So to enter 4.91*10^12 you would enter 4.91E12 or 4.91Exp12.

Wow, I just went to check on my daughters TI84 and it doesn't have an Exponent key. Calculators seem to have gone backward I guess that you have to enter the brackets after all.

Mike.

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