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Bayani Gaba-gaba

A function is a rule that assigns each input to exactly one output. Function notation lets you describe that rule precisely, evaluate it for any value, and combine or reverse functions in a single compact expression. This topic underpins coordinate geometry, calculus readiness and many Higher-tier exam questions.

You will learn to write functions in both f(x) and mapping notations, identify the domain and range of a function, build composite functions by feeding one function into another, and find the algebraic inverse that reverses a function's effect.

Nazarin Darasi

Barka da kammala darasi akan Function Notation. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.

Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.

Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.

If f(x) = 2x + 5, what is f(3)? A) 8 B) 11 C) 6 D) 10 Answer: B
Which notation correctly represents a function mapping? A) f(x) -> 3x B) f : x -> 3x C) x = f(3x) D) f(3x) = x Answer: B
What value must be excluded from the domain of f(x) = 1/(x - 5)? A) x = 0 B) x = 1 C) x = 5 D) x = -5 Answer: C
If f(x) = x + 4 and g(x) = 2x, what is fg(3)? A) 14 B) 10 C) 7 D) 12 Answer: B
If f(x) = 4x - 1, what is f inverse of 7? A) 27 B) 2 C) 3 D) 1.5 Answer: B