3 years ago

How do you do this question?

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

Answer:

Step-by-step explanation:

dy/dt = y² − 1

When -1 < y < 1, dy/dt is negative. So the solution is decreasing between y = -1 and y = 1.

Only one graph is consistently decreasing in that range, and that's the last graph.

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