Activities 779
When converted to rectangular form, the sum
of vectors
i and c equals the resultant vector r.
5. Using function
p2r, convert vectors i, c,
and
r to rectangular form.
Enter:
p2r(i)!i
p2r(c)
!c
p2r(r)
!r
Because the vectors are equal, the x-
coordinate of
i+c must equal the x-coordinate
of the resultant vector
r. Likewise, the y-
coordinate of
i+c must equal the y-coordinate
of resultant vector
r.
6. Set up two equations involving vectors
i+c
and
r.
• Equation 1 sets the x-coordinates
equal to each other.
• Equation 2 sets the y-coordinates
equal.
Store these equations into
eq1 and eq2,
respectively. Enter:
i[1,1]+c[1,1]=r[1,1]!eq1
i[1,2]+c[1,2]=r[1,2]
!eq2
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