No, the calculator here doesn't have any built-in capability for cumulative distribution functions (or probability density functions).
The value of i is just i (or √(-1) )
I guess you are referring to the aim to replace pi by tau (=2pi). It'll never fly!
The following table might help
n n2
Melody, I don't think the combination (a and b and c) should be read as "a and b and c are true" any more than the combination 1*0*1 should be read as "1*0*1 = 1".
However, I guess I'm still not understanding your meaning!
Err.. Your post said "So it just means " A and B and C are all true." And the answer is false ?"
If you meant "So it just means " A and B and C are not all true." then, yes, the answer is false. If they are all true the answer is true.
mass = density* volume
$${\mathtt{massofgold}} = {\mathtt{19.3}}{\mathtt{\,\times\,}}{\mathtt{4}} \Rightarrow {\mathtt{massofgold}} = {\mathtt{77.2}}$$
mass of gold is 77.2gm
No. If you think of AND as "multiply", with "true" as 1, and "false" as 0; then
a=1, b=0, c=1 so (a and b and c) becomes 1*0*1 which is 0.
Since 0 represents false, then (a and b and c) = (true and false and true) = false.
+33652 
