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Explain why demand for food is relatively price inelastic?

Food is relatively price inelastic as it is considered a necessity which means that everyone needs it. If price were to rise there wouldn't be any change in consumption as people require it to live so theref...
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Answered by James R. • Economics tutor
1987 Views

calculate the velocity of a particle at a certain point in an arbitrary potential given its initial conditions?

Using conservation of energy i.e calculating the total kinetic and potential energy at a trivial point, then solving for the velocity at the point in question by knowing the potential energy of the particle ...
MS
Answered by Marc S. • Physics tutor
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solve the equation x^2 -5x +1 = 25

We can see from the term x^2 that this equation is quadratic. To solve it, we need to get it into the form ax^2 +bx +c = 0. Subtract 25 from both sides to reach this form:So we have the equation x^2 -5x - 24...
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Answered by Frederick S. • Maths tutor
3377 Views

By first expanding the brackets, differentiate the equation: y=(4x^4 + 3x)(2x^2 - 9)

In this case the question has given you a clue as to the order that you solve the question. So, first we need to expand the brackets, multiplying each term by one another to get; y=8x^6 - 36x^4 + 6x^3 - 27x....
PA
Answered by Patrick A. • Maths tutor
4021 Views

Work out the equation of the normal to the curve y = x^3 + 2x^2 - 5 at the point where x = -2. [5 marks]

Firstly, we need to differentiate the function of the curve y = x^3 + 2x^2 - 5. Using d/dx (x^n) = nx^(n - 1), we get dy/dx = 3x^2 + 4x. To find the gradient of this curve, we then need to evaluate dy/dx at ...
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Answered by Amy G. • Maths tutor
4773 Views