We show that Carathéodory's conjecture on umbilical points of closed convex surfaces may be reformulated in terms of the existence of at least one umbilical point in the graphs of functions f: R 2 → R ...
Distance-time graphs show how the distance travelled by a moving object changes with time. These graphs also show if the object is moving at a constant speed or accelerating, going back to the ...
When two quantities are in direct proportion, as one increases the other does too. We can display this relationship in a graph. Two quantities that are in direct proportion will always produce a ...
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