You will be good just learn and if you love it you will be a good student and maybe a good scientist in future! Best wishes!
800 -> 120
100 -> x
800/100 = 120/x
8 = 120/x
x = 120/8
x= 15
15 of 100 run for a cause
Or 15% run for a cause!
I hope I helped you!
Ok I don't know this!
Oh im sorry i understand 4 choose 3 because you write it like this :( Im sorry !
Its [4!/3!(4-3)!](2x-1)=-12 <=>
<=> 24/6(2x-1)=-12 <=>
<=> 4(2x-1)=-12 <=>
<=> 8x-4=-12 <=>
<=> 8x=-8 so x=-1
I hope to helped you!
Yes exactly from definition of invertible matrix!
Thanks guys for your tips!
Its -A^4 + A^3 - A^2 + A = I <=>
<=> A( -A^3 + A^4 - A + I) =I
so ( -A^3 + A^4 - A + I)=A^-1
I think i know how to prove it im in 2nd year in Greek university in Math science but this is a lesson for 1st year
and I'm doing it again!
First you must prove that,A is invertible because if it don't we can't prove Α^-1 = -Α^4
If it's not we can't prove Α^-1 = -Α^4
