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y = 4(x^3) + 7x ... Find dy/dx

This is a simple differentiation question. To start, you need to know the general method of differentiation. This is:
if y = Axb then dy/dx = (A*b)x

Answered by Emilio E. • Maths tutor

3104 Views

To what extent might a government implement an expansionary fiscal policy?

An expansionary fiscal policy is where a government decides to decrease taxes and increase public spending. An expansionary fiscal policy will usually take place when a government is not in a relatively l...

Answered by Joseph V. • Economics tutor

1569 Views

ABCD is a rhombus on a graph. B(7,10). AC: y=7-4x. Find an equation for DB in the form tx+py+r=0 where t,p&r are integers.

AC and DB must be perpendicular therefore m₁m₂ = -1. (we can work out the gradient of DB)-4m₂ = -1 -----> m₂ = 1/4The equation of a line is y-y_...

Answered by Alexander L. • Maths tutor

2510 Views

Explain the differences between a feminist and functionalist view of the family?

The functionalists believe that the family is one of the most important aspects of a society. They see the "nuclear family" as the ideal type - a father who works (the breadwinner) and a mother ...

Answered by Aoife D. • Sociology tutor

14043 Views

What are 'Rate equations' and why are they useful?

The rate equation of a reaction is useful to describe the relationship between the rate of a reaction and the concentration of its reactants. It is used to determine how a change in the concentration of a...

Answered by Joshua M. • Chemistry tutor

2302 Views