Search our library of A Level questions

Top answers

All subjects

A Level

The functions f and g are defined by f : x → 2x + ln 2, g : x → e^(2x). Find the composite function gf, sketch its graph and find its range.

Composition of functions is when one function is inside of another function. That is, we replace each occurrence of x found in the outside function with the inside function. In our example, we start by wr...

Answered by Anna S. • Maths tutor

13993 Views

Find stationary points of curve y = x^3+3x-2

y = x^3+3x-2dy/dx = 3x^2-2Stationary points when dy/dx = 00 = 3x^2-22 = 3x^2+-root2 = 3x+-root2/3 = x

Answered by Charlie B. • Maths tutor

4317 Views

'The rebellions which occurred during the reigns of Edward VI and Mary I were mainly political in origin.' Assess the validity of this view.

A useful formula which I always use when writing any essay and has got me through GCSEs and degree-level essays:Students should first decide in their paragraphs what their answer to the question is going ...

Answered by Molly T. • History tutor

4245 Views

What's the difference between the accusative and the dative case and when should I use them?

The accusative and dative are two of the four cases that are used in the German language. The accusative case is used to mark the direct object of a sentence (bold in the example below):The man eats

Answered by Lauren J. • German tutor

2382 Views

Hoy en día, con la tentación universal de la comida basura, mantener una dieta sana resulta imposible. ¿Hasta qué punto estás de acuerdo?

Comer sano hoy en día depende de cada uno. No cabe duda que a cada diez pasos nos topamos con un anuncio de McDonalds o algo parecido. Debido a que la comida está lista en un abrir y cerrar de ojos y los ...

Answered by Andrea B. • Spanish tutor

2820 Views