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x^2 + y^2 + 10x + 2y - 4xy = 10. Find dy/dx in terms of x and y, fully simplifying your answer.

x² + y² + 10x + 2y - 4xy = 10

Start by differentiating both sides by x, the terms not containing y are differentiated normally, x² becomes 2x, 10x becomes ...

Answered by Guy L. • Maths tutor

14942 Views

How does a HDD (Hard drive disk) work?

A HDD is a mechanical form of storage, using electromagnetism to store and write data.
Mechanical drives are very prone to data lose and breaking when moved around, due to their mechanical nature.

Answered by Harvey B. • Computing tutor

4380 Views

Define tanh(t) in terms of exponentials

Whenever you have a define by exponentials question start with:

sinh(t)=0.5(e^t-e^-t) and cosh(t)=0.5(e^t+e^-t)

We know tanh(...

Answered by Nathaniel S. • Further Mathematics tutor

4026 Views

How do I properly introduce myself using a formal register in Italian?

Differently from English, Italian has a specific form to use when addressing people in a formal way. Generally speaking you have to use the third singular person of a verb (Egli-Ella-Lui-Lei) instead o...

Answered by Alessandro V. • Italian tutor

6110 Views

How do I solve a simultaneous equation with more unknowns than equations?

If a set of equations has more unknowns than equations, you cannot get a value for each unknown. However, you can find the relationships between the variables.Start by rearranging one variable in terms of...

Answered by Hayden M. • Further Mathematics tutor

5496 Views