Vectors a and b are defined by a = 2i + 3j and b = 4i - 2j, find 3a-b in terms of i and j

3a = 6i + 9j

-b = -4i + 2j

3a-b = (6i-4i) + (9j+2j) = 2i + 11j 

Answered by Pearse M. Maths tutor

6541 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the coordinates of the two points where the lines y=x²+4x+6 and y=x+4 meet.


Find the coordinates of the turning point of the graph y=x^2 -x -12. Use it to sketch the graph on a set of x-y axis.


Express 126 as a product of its prime factors


What is the length of x?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences