What is the positive horizontal tangent and what is the


1. The cost of producing x units of stuffed alligator toys is c(x) = 0.002x2 + 6x + 4000. Find the marginal cost at the production level of 1000 units.

2. Find the derivative of : 8√x-2/x10

3. Find the derivative of: 6√x

4. The graph of f(x)=2x3 + 9x2 - 168x + 21 has two horizontal tangents. One occurs at a negative value of x and the other at a positive value of x. What is the negative horizontal tangents, what is the positive horizontal tangent

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Mathematics: What is the positive horizontal tangent and what is the
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