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Maths
A Level

Find the solution(s) of 3(x^2)-6x+2=0

This is a quadratic equation and as such it has zero, one or two solutions depending on the value of the discriminant (b2-4ac). In this equation, a=3, b=-6 and c=2 so b2-4ac = 36-...

AS
Answered by Angus S. Maths tutor
3939 Views

How do you find the gradient of a parametric equation at a certain point?

The  easiest way to see this is with an example. So let us take the curve:

    x = cos(2t) ,  y = sin(t) with a point P where t = pi/6

The grad...

AD
Answered by Alex D. Maths tutor
23074 Views

What is dot product and how to calculate it?

There are two ways of multiplying vectors: one gives you another vector (cross product) and the other gives you a scalar- a number, like 3, 18 or 196 352. Hence, dot product is also called the scalar prod...

FW
Answered by Filip W. Maths tutor
6930 Views

Prove that the d(tan(x))/dx is equal to sec^2(x).

You can express tan(x) as sin(x)/cos(x). Therefore, tan(x)= sin(x)/ cos(x)The quotient rule can be applied here as there is a function of x in the numerator and denominator.Quotient Rule: (v*(du/dx) - u*(...

CU
Answered by Chinazam U. Maths tutor
18047 Views

What is the general rule for differentiation?

In differentiation you multiply the coefficient of the subject (what the value is multiplied by e.g. 3 is the coefficient of 3x6) by its exponent (the power that the value is raised to e.g. ...

OB
Answered by Oisin B. Maths tutor
3681 Views

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