a b)
c)
A=[-2 4 -6; -4 -6 8; -6 6 -10]
syms r
B=[130-r ;214-r ;78-r]
solutionC=linsolve(A,B)
d)
solutionD= solve(solutionC(1)^2+solutionC(2)^2+solutionC(3)^2==r)
there are two values of r.
e) if r=182
clc
A=[-2 4 -6; -4 -6 8; -6 6 -10]
r=182
B=[130-r ;214-r ;78-r]
solutionE1=linsolve(A,B)
if r=35942/193
B=[130-r ;214-r ;78-r]
solutionE2=linsolve(A,B)
