Texas Instruments TI-89 Titanium User Manual page 760

When converted to rectangular form, the sum
of vectors and equals the resultant vector
i c
4. Using function
and to rectangular form.
r
Enter:
!
p2r(i) i
!
p2r(c) c
!
p2r(r) r
Because the vectors are equal, the x-
coordinate of + must equal the x-coordinate
i c
of the resultant vector
coordinate of + must equal the y-coordinate
i c
of resultant vector
5. Set up two equations involving vectors
and .
r
• Equation 1 sets the x-coordinates
equal to each other.
• Equation 2 sets the y-coordinates
equal.
Store these equations into
respectively. Enter:
i[1,1]+c[1,1]=r[1,1]
i[1,2]+c[1,2]=r[1,2]
Activities
, convert vectors
p2r
. Likewise, the y-
r
.
r
and
eq1
!
eq1
!
eq2
.
r
, ,
i c
+
i c
,
eq2
757