⁦Function notation, domain and range⁩

⁦Work out values of f(x) from a rule, find the input that gives an output, write the domain of a fraction and a square root, and read the range from a graph⁩.

لم يُترجَم هذا المختبر إلى هذه اللغة بعد.

الدليل

⁦Read f(x) as⁩ "⁦f of x⁩": ⁦a machine called f that takes x and gives an output⁩. ⁦In f(x) = x٢ − ٢x, to find f(−١) put −١ in place of x and work it out⁩.

The مجموعة التعريف ⁦is every input the machine can accept; the⁩ مجموعة القيم ⁦is every output it can give⁩. ⁦A denominator must not be 0, and the number under a square root must not be negative⁩.

⁦Read the range from a graph⁩: ⁦the heights the curve reaches⁩. ⁦The domain is read along the x-axis and the range up the y-axis⁩.