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# Function h is defined like this: h(x) = 5x² - 15x + 3 At h(1), h is : a) increasing b) decreasing c) flat d) not differentiable?

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- Steve ALv 72 years ago
This is a quadratic with a minimum at x = -b/2a.

-(-15)/2(5) = 1.5

x = 1.5

The curve is decreasing before 1.5 and increasing after.

At (1) it is decreasing!

B

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