How do I invert a 2x2 square matrix?
A 2x2 square matrix is of the format (a b;c d). First you must check whether the matrix is invertible at all: if ad - bc is 0, the matrix is not invertible. The inverse matrix is (1/(ad-bc))*(d -b;-c a)
AY
Related Maths A Level answers
All answers ▸The quadratic equation 2x^2+8x+1=0 has roots a and b. Write down the value of a+b and ab and a^2+b^2.
There is a Ferris wheel where the passengers are placed 10m away from the centre. At what speed must they be moving in order for them to feel completely weightless at the top of the wheel.
How can I find the area under the graph of y = f(x) between x = a and x = b?
Where does integration by parts come from?