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How can you find out if two lines expressed in their vector form intersect?

Let the lines be: r 1 = (a, b, c) + t(d, e, f) r 2 = (g, h, i) + s(j, k, l) Since t and s above are variables and the rest of the letters are constants, the only way to change the point which the vector equa...
YI
Answered by Yordan I. • Maths tutor
4682 Views

How do you form the perfect tense, le passé composé?

the perfect tense, le passé composé, expresses completed actions in the past. It is composed of -the auxiliary verb (avoir ou être) conjugated in the present tense - followed by the past participle of the ve...
ER
Answered by Elena R. • French tutor
3097 Views

How to get started on an essay?

Writing an essay - whether it's for coursework submission or practice for an exam - can seem really really overwhelming sometimes. It's not as hard as it seems, if you know where to start though! First, you ...
LG
Answered by Lili G. • English tutor
2629 Views

Why is Pythagoras theorem (a^2 + b^2 = c^2) true for every right angle triangle?

Firstly let's take a right angle triangle. Label its sides a,b, c for the hypotenuse. Then arrange 4 of these triangles into a large square, with a smaller square contained within it. The area of the smaller...
EG
Answered by Edwyn G. • Maths tutor
8191 Views

Conjugate the verb “to go” in the present subjunctive form.

Che io vada, che tu vada, che egli vada, che noi andiamo, che voi andiate, che essi vadano.
GP
Answered by Giulia P. • Italian tutor
1596 Views