Cho ma trận A = [2 7 9 7; 3 1 5 6; 8 1 2 5], giải thích kết quả của các lệnh sau:
1 answer:
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let's recall that perpendicular lines have negative reciprocal slopes, so say for a line with a slope of a/b
a perpendicular one will be -b/a.
what does that mean? well, that the lines are perpendicular of course, they meet at a 90° angle, and two straight lines meeting at 90° can only meet once.
since a solution to a system of equations is where the graph meet, and these two meet perpendicularly once, then that means only one solution.
Answer:
- given - dimensions of a particular solid as 8 × 9 × 3
- to find - volume of that particular solid
Since , we're given three distinct measures , we can make out that the dimensions are most probably of a cuboid.
hope helpful ~