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Solve 4x+y=7 and 3x+2y=9

Firstly we identify the problem, in this case we have 2 equations which contain a total of 2 unknowns, it is therefore simultaneous equations.Our first step is to rearrange an equation of our choice to give ...
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Answered by Oliver S. • Maths tutor
5602 Views

How to express what I like and dislike?

To express such an opinion, you can use the verb "aimer" which means "to like". It's a regular verb from the 1st group (ending in -er) which is quite easy to conjugate, and once you under...
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Answered by Camille D. • French tutor
2904 Views

When do I use the subjunctive?

There are a number of different situations in which you use the subjunctive in French. It is a 'mood' rather than a tense, and is used in dependent clauses following 'que' or 'qu''. In French, feelings of pe...
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Answered by Katherine D. • French tutor
1793 Views

Find the coordinates of the stationary points y=x^4-8x^2+3

Begin with the equation: y = x 4 -8x 2 +3. Differentiate by bringing the power down and reducing the power by 1 of each of the terms with x in and constant terms (3) become zero. dy/dx = 4x 3 -16x. Stationar...
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Answered by Finlay H. • Maths tutor
6747 Views

If the function f is defined as f= 1-2x^3 find the inverse f^-1

Set the function equal to y so y=1-2x^3now rearrange this to set x as the subject 2x^3= 1-yx^3 = (1-y)/2x = ((1-y)/2)^1/3therefore the inverse is f^-1 = ((1-x)/2)^1/3
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Answered by Kavita K. • Maths tutor
3852 Views