First thing that comes to mind is:
'to raise a number to a power use the carrat sign between the number to be raised and the power'. Ie: 2.45^20is 2.45 raised to the 20th power or 60718591.32 (that's as far as my handheld calc goes). At least that's the way QuickBasic does it.<p>Here's a sample:<p>1 COLOR 11, 5
CLS
PRINT : PRINT : PRINT : PRINT : PRINT
PRINT " BANDPASS BOX SPEAKER DESIGN PROGRAM"
PRINT : PRINT
INPUT " Fo="; FS
INPUT " Vas="; V
INPUT " Qts="; Q
2 INPUT " Low end cutoff="; FL
LET VF = (1.2 * Q) ^ 2 * V
LET A = FL / (FS / Q)
LET B = A + .95
LET FH = B * (FS / Q)
PRINT " LOW FREQUENCY CUTOFF="; FL; "Hz."
PRINT " HIGH FREQUENCY CUTOFF="; FH; "Hz."
INPUT " TRY ANOTHER FREQUENCY(1=Y,2=N)ENTER"; C
ON C GOTO 2, 3
3 PRINT
LET QT = A + .37
LET VB = V / (((QT / Q) ^ 2) - 1)
LET FB = QT * (FS / Q)
4 INPUT " CHOOSE DUCT SIZE BETWEEN 1 - 6 IN."; D
LET DA = (D / 2) ^ 2 * 3.14159
LET DL = ((2691 * DA) / (VB * (FB ^ 2))) - (.88 * SQR(DA))
LET VT = VF + VB
PRINT " DUCT IS"; DL; "IN. LONG"
INPUT " SATISFACTORY(1=Y,2=N)ENTER"; E
ON E GOTO 5, 4
5 CLS
PRINT : PRINT : PRINT : PRINT : PRINT : PRINT
PRINT " LOW FREQ. CUTOFF="; FL; "Hz."
PRINT " HIGH FREQ. CUTOFF="; FH; "Hz."
PRINT " FRONT BOX VOLUME="; VF; "CU. FT."
PRINT " REAR BOX VOLUME="; VB; "CU. FT."
PRINT " TOTAL BOX VOLUME="; VT; "CU. FT."
PRINT " FRONT BOX FREQ.="; FB; "Hz."
PRINT " DUCT SIZE="; D; "IN.DIAM. X"; DL; " IN. LONG"
INPUT " TRY ANOTHER DESIGN(1=Y,2=N)ENTER"; X
ON X GOTO 1, 6
6 CLS
PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT : PRINT
PRINT " BASSY LISTENING!"
END<p>Have fun with it
<p>CeaSaR