I am a new member - hp35s owner

[Thomas Klemm]

(01-08-2014 05:42 AM)walter b Wrote:  Cross product is in the library in flash memory (see CAT) although a little do-it-yourself program would be a good exercise

Just noticed a bug in the method Vec_Magnitude:

/* VAB
Vector absolute value (modulus). Vector in Y,Z,T. Returns
the length in X (dropping the vector). The original vector
is saved in L,I,J.
*/
061 ***LBL'VAB'
062 XEQ Vec_Magnitude
063 x[<->] T
064 STO J
065 DROP
066 [cmplx]STO L
067 [cmplx]DROP
068 RTN

// Subroutine used by several functions.
070 Vec_Magnitude:: ENTER[^]
071 x[^2]
072 RCL Z
073 RCL[times] T
074 +
075 RCL T
076 RCL[times] T
077 +
078 [sqrt]
079 RTN


Should be RCL[times] A instead. Or then use x[^2].

Test-case: \(
\left \| \begin{pmatrix}
2 \\
1 \\
2
\end{pmatrix} \right \| = 3
\)

Current result is \(\sqrt{7}\).

Cheers
Thomas

PS: Probably a typo in the comment of VAB.

Vector in Y,Z,T