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 Oct23 revised Having difficulties showing the triangle inequality of metric in the plane add missing \text{…} Oct23 revised Confusing algebra rule: why $\frac{7^{n+1}-1}{6} + 7^{n+1} = \frac{7^{n+2}-1}{6}$? align equation signs Oct23 suggested approved edit on Having difficulties showing the triangle inequality of metric in the plane Oct23 suggested approved edit on Confusing algebra rule: why $\frac{7^{n+1}-1}{6} + 7^{n+1} = \frac{7^{n+2}-1}{6}$? May19 awarded Scholar May19 accepted Gradient formula of volume of tetrahedron involving the scalar triple product May19 revised Gradient formula of volume of tetrahedron involving the scalar triple product fit answer to question May19 awarded Editor May19 revised Gradient formula of volume of tetrahedron involving the scalar triple product add missing factor May19 answered Gradient formula of volume of tetrahedron involving the scalar triple product May16 awarded Student May16 asked Gradient formula of volume of tetrahedron involving the scalar triple product Feb24 awarded Supporter May6 awarded Informed