How do you invert a 2x2 matrix?
Take a matrix A=(acbd), where a,b,c,d are numbers.
First find the determinant. This is ad-bc.
Now, rearrange the matrix to become (d-c-ba). Divide this by the determinant, to have A-1=1/(ad-bc)(d-c-ba). This is the inverse of A.
YP
Answered by Yaniv P. • Further Mathematics tutor
7504 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸For f(x) = (3x+4)^(-2), find f'(x) and f''(x) and hence write down the Maclaurin series up to and including the term in x^2.
Find the displacement function if the acceleration function is a=2t+5. Assume a zero initial condition of displacement and v=8 when t=1.
A particle is launched from the top of a cliff of height 87.5m at time t=0 with initial velocity 14m/s at 30 deg above the horizontal, Calculate: a) maximum height reached above bottom of cliff; b)horizontal distance travelled before hitting the ground.
How do you find the derivative of arcsinx?