Ask a New Question
Search
Asked by
Sydney
Find
a + b, 2a + 3b, |a|, and |a − b|.
a = 2i + j, b = i − 5j
Answers
Answers
Answered by
Reiny
a+b = 2i+j + i-5j = 3i - 4j
do 2a + 3b the same way
|a| = √(2^2 + 1^2) = √5
for |a-b| , find a-b first then take the magnitude using your formula
Related Questions
Related
Math.. find limit help? Find the given limit. (x→ 1)lim: (square root x-1) + 1
isoceoles triangle Find y find AB Find BC, with AB 4y+6 and BC 6y-3. I don;t understand Thanks
Find to find equation of the tangent line y=x^4-x^3-x^2-x+1 at the point x=1
Find Curvature, find the curvature k of the curve, where s is the arc length parameter. r(s)=(3+s...
Find these quantities: i. Find all angles in the unit circle with secx=2.1754 . Give your answers i...
Find new percentages, and find the actual quantities:75% of 75% of 256
Find the cubic root 56. Find the cubic root 32. Find the square of 45 Find the square root...
Find find the surface area of a rectangle or pyramid with these measurements: L equals 8CMW equals...
Find the Volume. Find the Volume. What is the smallest side length? What would the smallest cube be...
Find find\frac{\left(3.2\cdot10^{10}\right)\left(3.75\cdot10^{6}\right)}{\left(4\cdot10^{...