MathGrit
ProblemsTechniquesPricing
Sign inGet started
Back to problems

Continuous function f(f(x))=1 integral values

2175ExpertCalculusFunctions

Harvard-MIT Mathematics Tournament

Let $f:[0,1] \rightarrow [0,1]$ be a continuous function such that $f(f(x)) = 1$ for all $x \in [0,1]$. Determine the set of possible values of $\int_{0}^{1} f(x) \, dx$.
0 students attempted0% solvedRating 2175

Related practice paths

AIME PracticeInteger-answer practice for deeper multi-step problems.How to Qualify for AIMEScore goals, contest choice, and prep habits for AIME hopefuls.How to Review Missed AMC ProblemsTurn missed problems into a repeatable improvement loop.

Ready to check your answer?

Create an account to submit answers, save history, and track your rating.

Progressive Hints

Unlock hints one at a time — each reveals a little more without spoiling the solution.

Step-by-Step Solutions1

Multiple solution approaches with detailed walkthroughs, unlocked after you solve the problem.

AI-Powered Grading

Instant feedback on your answer — handles fractions, decimals, and equivalent forms.

Curated problem bank

Supported tracks for AMC, AIME, MATHCOUNTS, and olympiad-style training, plus global problem sources like UKMT, Euclid, and Kangaroo.