# Monthly Archives: December 2017

# Inverse and determinant calculator for 3×3 matrices

# Vector cross-product calculator

# Online calculator to multiply 3×3 matrices

# STEP I 2001 Q.1 (triangle in square)

STEP I/2001/1 – The points A, B, and C lie on the sides of a square of side 1 cm and no two points lie on the same side. Show that the length of at least one side of the triangle ABC must be less than or equal to cm.

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