wow?
if b is base
why is
11b2
2
not
11b2
3
or
12b2
2
not
12b2
domain error
33bg
16
not
33bg
51
Constants and results are displayed in the default base 10 (a)
why
11ba
10
not
11ba
11
Scientific notation raises the default base 10 by powers of 10 as in
1e1
10
3.45e6
3450000
Napier's constant which he denoted e in honour of Euler is given by
1x1 in J which similarly can be raised by powers of e
(Not to be confused with Euler's constant which he denoted C and
Macheroni denoted γ=0.5772156649)
1x1
2.71828
2x2
14.7781
∏ is given by 1p1 in J which similarly can be raised to powers of ∏
1p1
3.14159
2p2
19.7392
So why confuse the student with this?
Negative integers following p and x indicate the use of reciprocals.
For example, 2p_2 is two divided by π squared, and 2x_2 is two
divided by the square of Euler's number.
Why not just say that for e (exponent of 10), p (exponent of ∏) and
x (exponent of e) can be negative or decimal numbers?
Donna
[EMAIL PROTECTED]
On 14-Jun-06, at 9:42 AM, John Randall wrote:
dly wrote:
I get imaginary numbers 3j4 but at a loss why 1x1 for e
I see 1r1 but where did this x come from? it doesn't say but it
somehow seems to follow that 1p1 is PI
Donna:
The exponential numeric constants are explained in the system
documentation
http://www.jsoftware.com/books/help/dictionary/dcons.htm
and in Henry Rich's book
http://www.jsoftware.com/books/help/jforc/
applied_mathematics_in_j.htm#_Toc129570854
I guess e would have been better than x except that it had already
been
used for base 10 exponential notation.
Best wishes,
John
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