Define Constants

Constant

Constant

Constants

The constants below are always available as part of the PHP core.

Measurements counts

Constant Editor

Constants Editor

Planck's Constant

Boltzmann Constant

Avogadro's Number

Returns TRUE on success or FALSE on failure.

Number of fixed decimal digits

Number of fixed decimal digits.

So I can just rewrite that as A so now A is not a function anymore, it's just a number A times the second derivative of y, with respect to x, plus B times the first derivative, plus C times y.

Predefined constants

Name of the user programmable constants.

Fixed number of lines

Gravitational Constant

Molar Gas Constant

Stefan Boltzmann Constant

That this number becomes huge.

So this is a constant right here.

BC math configuration options

runtime function

shift pressed during click

Set variable

Select Arguments

Edit Constants...

Insert constant...

Formula Settings

And where does the c come from?

What about bigger numbers?

We said this could be any constant and this could be any constant.

Checking Constants

Fixed size scrollback

Constant expression expected

Fine Structure Constant

Now we can say that the discount

And then what's the derivative of y squared with respect to x?

Configure Day Numbers

Sets maximum numeric value

And then I want to make it minus some constant.

We could call this c3 and now this is c4.

So it's going to be 2 pi x f of x dx.