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# Tutor profile: Ridanah R.

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Ridanah R.
Student at the University of Melbourne
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## Questions

### Subject:Calculus

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Question:

Evaluate the indefinite integral, 6 x 5 − 18 x 2 + 7 d x

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Ridanah R.

All we are being asked to do here is “undo” a differentiation and if you recall the basic differentiation rules for polynomials this shouldn’t be too difficult. As we saw in the notes for this section all we really need to do is increase the exponent by one (so upon differentiation we get the correct exponent) and then fix up the coefficient to make sure that we will get the correct coefficient upon differentiation. Here is the answer for this part. ∫ 6 x 5 − 18 x 2 + 7 d x = x 6 − 6 x 3 + 7 x + c Don’t forget the “+c”! Remember that the original function may have had a constant on it and the “+c” is there to remind us of that. Also, don’t forget that you can easily check your answer by differentiating your answer and making sure that the result is the same as the integrand.

### Subject:Economics

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Question:

What are the economics pros and cons of immigration?

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Ridanah R.

Pros of Immigration: Increased economic output, Increased demand and growth, Better skilled workforce, Foreign income, Solves skill shortage, Multi-cultural society. Cons of Immigration: Potential negative impact on real wages, Real GDP per capita could fall, Structural unemployment, Housing costs.

### Subject:Finance

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Question:

When should a company consider issuing debt instead of equity?

Inactive
Ridanah R.

A company should always attempt to optimise its capital structure. If taxable income is present, the company would benefit from the tax shield of issuing a debt. A firm should only issue debt if they have a steady cash flow and is able make their interest payments. They must also take into account if issuing debt would lower their weighted average cost of capital, which would be a definite benefit.

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