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Quelle est votre matière préférée? Pourquoi?

Je dirais que le français est mon sujet préféré parce que j'aime parler une langue étrangère et parler avec des nouvelles personnes. Cependant, cela peut aussi être difficile. Aussi j'aime voyager beaucou...

Answered by Beatrix L. • French tutor

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A particle is moving along a straight line. The fixed point O lies on this line. The displacement of the particle from O at time t seconds is s metres where s = 2t3 – 12t2 + 7t(a) Find an expression for the velocity, v m/s, of the particle at time t.

To find velocity you differentiate displacement with respect to time

Therefore ds/dt = v = (3x2)t²-(12x2)t²+7

Implying v = 6t²-24t+7

Answered by Thomas O. • Maths tutor

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Give the prime factorisation of 630

630 = 5 x 126 126 = 2 x 63 63 = 7 x 9 9 = 3 x 3 so 630 = 2 x 3² x 5 x 7

Answered by Annie D. • Maths tutor

3568 Views

What is the difference between a compiler and an interpreter?

Both compilers and interpreters are used to translate high level programming languages to machine code. Compilers do this by converting all of the high level code into machine code before running the prog...

Answered by Joel P. • Computing tutor

10861 Views

Find the equation of the straight line which passes through the points (3,1) and (-1,3)?

The equation of a line is y=mx+c. The first step is to find m, which is the gradient. This is found by dividing the change in the y values, by the change in x values. So in this case, the gradient would b...

Answered by Joel P. • Maths tutor

10942 Views