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