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What's Pythagoras Theorem and how can I use it?

Pythagoras theorem is: A^2 + B^2 = C^2. This might look confusing but it is actually quite simple. Pythagoras can only be used on a RIGHT ANGLED TRIANGLE! Then what you do is that the side of the triangle OP...
GS
Answered by Gabrielle S. • Maths tutor
3809 Views

Simplify. (x(^2)+4x)/(x(^2)+3x-4)

To start with trying simplify any equation, you need to first see if the top part of the equation and the bottom part can be factorized. Fortunately the top part and bottom part of the equation are both quad...
JR
Answered by Jack R. • Maths tutor
7660 Views

What is the equation of the normal line to the curve y = 3x^3 - 6x^2 at the point (1, 4)?

First we must find the gradient of the curve at the point (1, 4) - we do this by finding the derivative dy/dx, as we do to find any gradient. Differentiating the equation of the curve gives us that dy/dx = 9...
AK
Answered by Amy K. • Maths tutor
9301 Views

Solve the simultaneous equation: 2x + y = 7 and 3x - y = 8

The aim of this maths question is to find the two unknowns, x and y, by using simultaneous equations. Simultaneous equations can be solved by either using the elimination method or the substitution method. T...
OG
Answered by Oscar G. • Maths tutor
16306 Views

Integrate ln(x) by parts then differentiate to prove the result is correct

Integrating by parts requirez recognition that ln(x) is equal to ln(x) multiplied by 1. Making u equal to ln(x) should make the integration trivial. Differentiation is a simple use of the product rule and ch...
JD
Answered by Joshua D. • Maths tutor
5147 Views