
“Nerves that extend throughout the body on both sides emerging directly from brain and brain stem are called cranial nerves.”
Answer:
a=-2î+j-5k
|a| = √(−2)² +1² + (−5)²
a = √√4+1+25
a = √30
Thus, direction cosines of a are
(- 2/(sqrt(30)), 1/(sqrt(30)), - 5/(sqrt(30)))
DENOTING
Eqn 1: 3x+4y=58
Eqn 2: 1x+3y=36
TRANSLATING
(Multiply Eqn 2 by 3)
Eqn 3: 3x+9y=108
ELIMINATION
(Subtract Eqn 3 from Eqn 2)
Eqn 4: -5y=-50
Divide both sides by -5 to derive the value of y.
y=10
SUBSTITUTION
(Substitute the value of y to any of the first two equations)
3x+4(3)=58
3x=58-12
3x=46
x=46/3 or 15 1/3