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Maths & Physics Help

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unknown:
i dont get it
wht is 2 2

astarmathsandphysics:
i AM TRYING TO TYPE IN THE QUESTION. iT IS SO DIFFICUL

astarmathsandphysics:
a)(a b)(-2)     (-2)
   (c d)(2)   =  (6)
multiply out to get -2a+2b=-2 and -2c+2d=2

Similarly with b to b' etc. Solove the simulateous equations in a and b c d to get the matrix (2 1)
                                                                                                                                                  (1 2)

b)Follow the procedure from a to get (0 -1)
                                                            (-1 1)

c)(0 -1)(2 1)
   (-1 1)(1 2 )


Multiply the matrices to get(-1 -2)
                                               (-1 1)

d) (1/3 -2/3)
    (1/3  -1/3)

It is dificult to give a detailed explanation with something like latex. We will have to get some notaion software.

unknown:
hey thx fr d help bt srry to say i still dnt get it :'(

astarmathsandphysics:
I will see if I can scan and email you something. I have to set up my scanner for this computer. Will try and do it today.

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