Top answers

Maths
All levels

Solve these simultaneous equations: 3x-5=-4y and 2xy=-4

First start with 2xy=-4, rearrange to find in terms of x, x=-2/y. Substitute this into the other equation (3x-5=-4y), producing -6/y -5 =-4y.Times every term by -y resulting in 6+5y=4y2 .Rearr...

AS
Answered by Amelia S. Maths tutor
3037 Views

How do you differentiate using the chain rule?

At first the chain rule can seem quite daunting and convoluted but with a few examples over the course of this lesson, it will seem simpler and more intuitive.
The chain rule is used where the equat...

AK
Answered by Alex K. Maths tutor
2856 Views

When working with probabilities why is it sometimes necessary to add and sometimes to multiply?

Whether you need to add or multiply depends on whether it is a case of 'AND' or 'OR'. For 'AND' you multiply, and for 'OR' you add. Below are examples of each case, using dice as an example: To calculate ...

MW
Answered by Marcus W. Maths tutor
2714 Views

Solve the simultaneous equations: y=x^2 + 3x + 7 and y=x + 10

x= -3 and 1y= 7 and 11

US
Answered by Usmaan S. Maths tutor
2988 Views

Differentiate the following equation: f(x) = 5x^3 + 6x^2 - 12x + 4

Answer:
f'(x) = 15x^2 + 12x -12
This is according to basic rules of differentiation and is a beginner level differentiation question as following:If f(x) = ax^nThen f'(x) = x(nx^n-1)

HK
Answered by Holly K. Maths tutor
2816 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences