In Exercises 39–42, calculate the solution by using a matrix equation. { 2 x + 7 z + 5 w = 10 5 x − y + 3 z = − 2 x + 2 y − 2 w = 0 3 x − 4 y + 2 z − 5 w = − 18
In Exercises 39–42, calculate the solution by using a matrix equation. { 2 x + 7 z + 5 w = 10 5 x − y + 3 z = − 2 x + 2 y − 2 w = 0 3 x − 4 y + 2 z − 5 w = − 18
Solution Summary: The author calculates the solution of the equations c2x +7z+5w=10 5x-Texty+3
Why researchers are interested in describing measures of the center and measures of variation of a data set?
Let Χ be a real-valued character (mod k). Let
k
S = Σnx(n).
n=1
If (a, k) = 1,
ax(a)S = S (mod k).
(iii) Write k = 2ºq where q is odd. Show that there is an integer a
with (a, k) = 1 such that a = 3 (mod 2ª) and a = 2 (mod q).
Deduce that 12S = 0 (mod k).
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HOW TO FIND DETERMINANT OF 2X2 & 3X3 MATRICES?/MATRICES AND DETERMINANTS CLASS XII 12 CBSE; Author: Neha Agrawal Mathematically Inclined;https://www.youtube.com/watch?v=bnaKGsLYJvQ;License: Standard YouTube License, CC-BY