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Factorise x^2 + 4x + 4

Factorising takes the form of (x+a)(x+b) where in this case: a+b = 4 anda*b=4this is taken from the original equations coefficient to x and the constant value.factorising gives (x+2)(x+2) which is ...

Answered by Rajpinder Singh S. • Maths tutor

2614 Views

The gradient of the curve at point (x,y) is given by dy/dx = [7 sqrt(x^5)] -4. where x>0. Find the equation of the curve given that the curve passes through the point 1,3.

I like this question because it can be broken down into parts, each which contain an important reminder/lesson for an A level/GCE maths student. I would start the lesson by running through the rules of in...

Answered by Michael S. • Maths tutor

3830 Views

show that the value of cos(30) x tan(60) + sin(30) is an integer

cos(30) x tan (60) + sin (30) = (√3)/2 x √3 + 1/2 = 3/2 + 1/2 = 4/2 = 2

Answered by Henry P. • Maths tutor

11616 Views

How can I find the angle between 2 vectors?

Well, basically what you need to do is apply the dot product. It is an easy process.First of all you make An element-wise multiplication of each vector. Let’s say you’ve got vector a and ...

Answered by Ismael O. • Maths tutor

2388 Views

y is inversely proportional to d^2. When d = 10, y = 4. d is directly proportional to x^2. When x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.

Inversely proportional means proportional to one over, so the first bit tells us y = a/d^2, where a is number we don't know yet that connects y and d. To find it we need some example values of y and d, wh...

Answered by Katie A. • Maths tutor

18673 Views