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A curve has the equation: x^4 + 2x -xy - y^3 - 10=0. Find dy/dx in terms of x and y.

We need to differentiate all values with respect to x. Therefore for the first two terms, multiply by the power and then subtract 1 from the original power. Therefore 4(x^4-1) + (2)(2x^2-1

Answered by John G. • Maths tutor

6234 Views

Calculate the mass in grams of Iron (III) Chloride in a solution of 500 cm^3 which has a concentration of 0.200 mol/dm^3

First work out the moles of Iron (III) Chloride using the equation concentration = moles/volume, rearranging the eqaution in order to calculate moles gives moles = concentration x volume. Check the units!...

Answered by Simon S. • Chemistry tutor

11160 Views

Do you say "Habían muchas personas" or "Había muchas personas"? Which form is correct?

The second one is the correct! This is the impersonal use of the verb "haber", so the sentence lacks of subject. The mistake comes when people think "muchas personas" is the subject an...

Answered by Marcelo G. • Spanish tutor

7117 Views

How does Bronte convey the psyche of the Victorian woman through Gothic themes in Jane Eyre?

Through the medium of Jane Eyre, Charlotte Bronte was able to challenge the boundaries of Victorian female through the language of Gothic literature. The concept of the 'other' is presented to th...

Answered by Isabella S. • English Literature tutor

5449 Views

A body is moving at 70km/h and has a mass of 130kg, calculate its maximum kinetic energy.

Firstly, the speed is not given in SI units, this is modified by changing the units from km/h to m/s by the following relationship; 70km/h = (70000/3600)m/s. Once this is complete the equation for kinetic...

Answered by Joe I. • Physics tutor

3075 Views