amyy83 amyy83
  • 01-10-2019
  • Mathematics
contestada

evaluate -1/2A when

evaluate 12A when class=

Respuesta :

nadiroz
nadiroz nadiroz
  • 01-10-2019
Answer: B, No solution

Actual answer is:

[-1.33 -5]
[-2 -4]
Answer Link
Аноним Аноним
  • 01-10-2019

Multiplying a matrix by a scalar is very simple: you only have to multiply every entry of the matrix by that scalar.

So, we have

[tex]A=\left[\begin{array}{cc}-\dfrac{4}{3}&-5\\-2&-4\end{array}\right]\implies -\dfrac{1}{2}A=\left[\begin{array}{cc}-\dfrac{1}{2}\left(-\dfrac{4}{3}\right)&-\dfrac{1}{2}(-5)\\-\dfrac{1}{2}(-2)&-\dfrac{1}{2}(-4)\end{array}\right]=\left[\begin{array}{cc}\dfrac{2}{3}&\dfrac{5}{2}\\1&2\end{array}\right][/tex]

Answer Link

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