Top answers

What is the difference between a parametric equation and a general equation?

A parametric equation is defined by a variable t such as y = 4t +1 and x = 2t, while general equation is defined sorely by y and x (in 2 dimensional space). As t is the free variable you can simply replace t...
CZ
Answered by Chen Z. • Maths tutor
9704 Views

Karen got 32 out of 80 on a Maths test. She got 38% on an English test. Which test did she do better in?

32 out of 80 on a Maths test38% on an English test As we don't know any other information about the English test (e.g. her mark and the total mark) the only way that we can compare the two results is by usin...
VC
Answered by Vicky C. • Maths tutor
12806 Views

What are the values of x and y?

a) 3x + 5y = 26 b) 2x + 2y = 12 Step One : We need to find a way to equate either the x terms of the y terms in each equation. Multiply equation a) by 2 and equation b) by 3 to form the following equations. ...
EA
Answered by Emily A. • Maths tutor
147509 Views

Differentiate: y = xsin(x)

This is a function which is in the form, y = f(x)g(x) It's the product of two functions and so we must make use of the product rule . This is a simple formula which you have to remember: dy/dx = f'(x)g(x) + ...
OR
Answered by Oliver R. • Maths tutor
91115 Views

Differentiate x^2

To differentiate x^2 Step 1) whatever the number on the power, put that in front of x. Step 2) Then minus one (-1) from the power Therefore, by putting the number on the power in front (which is 2) and deduc...
AM
Answered by Anjana M. • Maths tutor
4844 Views