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How to draw the inverse of a function ?

There is a simple trick to drawing the inverse of a given function. First, roughly sketch the original function. This means a sketch of the general shape of the curve with some key characteristics such as it...
CV
Answered by Christina V. • Maths tutor
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What is the tangent line to the curve y = x^3+4x+5 at the point where x = 2?

First, we must find the value of y when x = 2. y = x 3 +4x+5 = (2) 3 +4(2)+5 = 21 Then we must find the gradient of the tangent line. This can be done by differentiating y with respect to x and substituting ...
OT
Answered by Oliver T. • Maths tutor
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How do I work out the area of a rectangle

ok. Well think about a square. What times what creates the area of a square? Yes the bottom one and side on. So which do you think will be useful to know to find the area of a rectangle? Yes the same! So the...
CW
Answered by Charlotte W. • Maths tutor
3784 Views

What is the multiplication rule in probability?

If presented with an 'AND' statement, multiply the probabilites of each individual event happening by one another,If rolling a die, what is the probability of landing a 1 AND then a 21/6 * 1/6 therefore prob...
NJ
Answered by Nidhish J. • Maths tutor
4709 Views

Rearrange aq - ac = d

Start by factoring out the common term, so in this case a. a(q - c) = d Now divide by a on both sides to isolate the (q - c) (q - c) = d/a Now add c on both sides to make q the subject q = c + d/a
AS
Answered by Avnish S. • Maths tutor
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