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Question Number 8650 by tawakalitu last updated on 19/Oct/16

Commented by tawakalitu last updated on 19/Oct/16

$$\mathrm{please}\mathrm{reduce}\mathrm{to}\mathrm{echelon}\mathrm{form}.$$

Commented by ridwan balatif last updated on 20/Oct/16

$$\mathrm{if}5\mathrm{w}+12\mathrm{x}-7\mathrm{y}+6\mathrm{z}=-7...(\ast ),\mathrm{then}$$$$2\mathrm{w}+5\mathrm{x}-2\mathrm{y}+\mathrm{z}=1\to 4\mathrm{w}+10\mathrm{x}-4\mathrm{y}+2\mathrm{z}=2...\left(1\right)$$$$\mathrm{w}+2\mathrm{x}-3\mathrm{y}+4\mathrm{z}=2...\left(2\right)$$$$\left(1\right)+\left(2\right)\to 5\mathrm{w}+12\mathrm{x}-7\mathrm{y}+6\mathrm{z}=4...\left(3\right)$$$$\mathrm{now}\mathrm{compare}\mathrm{third}\mathrm{equation}\mathrm{with}(\ast )$$$$5\mathrm{w}+12\mathrm{x}-7\mathrm{y}+6\mathrm{z}=-7...(\ast )$$$$5\mathrm{w}+12\mathrm{x}-7\mathrm{y}+6\mathrm{z}=4...\left(3\right)$$$$...?$$$$\mathrm{BTW},\mathrm{i}{\mathrm{don}}^{\prime }\mathrm{t}\mathrm{know}\mathrm{about}\mathrm{eschelon}\mathrm{form},\mathrm{because}\mathrm{i}\mathrm{am}\mathrm{not}\mathrm{study}\mathrm{about}\mathrm{it}$$$$$$$$$$

Commented by tawakalitu last updated on 20/Oct/16

$$\mathrm{Alright}\mathrm{thank}\mathrm{you}\mathrm{sir}.$$

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