Topic Details (Notes format)

How to Perform Function Composition (f ∘ g)

Subject: Mathematics

Book: Maths Mastery

Function composition f(g(x)) means applying g first, then feeding that result into f. For instance, if f(x)=x²+1 and g(x)=2x–3, then f(g(x))= (2x–3)²+1=4x²–12x+9+1=4x²–12x+10. Composition frequently appears in advanced algebra, transformations, and chain-rule usage in calculus. In real-world models, you might first calculate a cost function g(x), then apply a tax function f to g(x). Mastery of composition fosters advanced manipulations of nested processes and underpins functional decomposition strategies in computing, engineering, or multi-stage transformations.

Practice Questions

What is the HCF of 48 and 180?

View Question

The sides of a triangle are 7, 24, and 25. Is this a right triangle?

View Question

If the cost price of an item is Rs. 400 and the selling price is Rs. 500, what is the profit percentage?

View Question

If two complementary angles differ by 30°, what are the angles?

View Question

What is the cube of 4?

View Question

If 5x - 2 = 13, what is the value of x?

View Question

If sin(A) = 3/5 and cos(B) = 5/13, where A and B are acute angles, what is sin(A+B)?

View Question

If the sum of the angles of a polygon is 1080°, how many sides does the polygon have?

View Question

A rectangle has a length of 10 cm and a width of 5 cm. What is the diagonal of the rectangle?

View Question

If a + b = 10 and ab = 21, what is the value of a^2 + b^2?

View Question