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Where can I find 1-1/2 inch (inside diameter) SDR-21 PVC pipe? Solve the truss to find the internal forces (tension or compression) and the reaction forces (Ray, Rcy, Rcx). http://tinypic.com/r/1ilawo/9? Im so confused in math. I am literally just stumped. I have no clue what I am doing? Find a basis for the vector space:
(a -a a)
(b 0 c) and then for the vector:
(6 -6 6)
(1 0 5) give its coordinates under that basis? HELP I NEED HELP ONE MATH QUESTION?