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gibson:teaching:spring-2018:math445:lab4

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 gibson:teaching:spring-2018:math445:lab4 [2018/02/12 09:08]gibson created gibson:teaching:spring-2018:math445:lab4 [2018/02/12 09:14] (current)gibson 2018/02/12 09:14 gibson 2018/02/12 09:08 gibson created 2018/02/12 09:14 gibson 2018/02/12 09:08 gibson created Line 143: Line 143: {{:​gibson:​teaching:​fall-2012:​math445:​truss4.png?​direct&​600}} {{:​gibson:​teaching:​fall-2012:​math445:​truss4.png?​direct&​600}} - Which member (beam) is under most compression (positive \$f_i\$)? Which member (beam) is under most tension ​(negative \$f_i\$)? + A positive ​value of \$f_i\$ indicates the member (beam) ​\$i\$ is under tension, and negative \$f_i\$ indicates compression. Which member is under most tension? Which member is under most compression? One of the main challenges of this problem is figuring out how to enter the elements of the matrix quickly and reliably. For a small matrix, it's easy to type out the matrix explicitly like ''​A = [ 1 9 7 ; 4 3 8 ; 6 2 0]'',​ but for a 13 x 13 matrix with 169 elements, that's tedious and error prone. ​ One of the main challenges of this problem is figuring out how to enter the elements of the matrix quickly and reliably. For a small matrix, it's easy to type out the matrix explicitly like ''​A = [ 1 9 7 ; 4 3 8 ; 6 2 0]'',​ but for a 13 x 13 matrix with 169 elements, that's tedious and error prone. ​