Beskriv talföljden 1,2,4,7,11,... med en rekursiv formel. Vi börjar med att försöka hitta ett mönster.
Vi ser att differensen mellan två intilliggande element ökar med 1 för varje steg man tar.
Element | Värde | Uttryck |
---|---|---|
a1 | 1 | 1 |
a2 | 2 | a1+1 |
a3 | 4 | a2+2 |
a4 | 7 | a3+3 |
a5 | 11 | a4+4 |
{{ 'ml-article-textbook-solutions-expert-solutions' | message }}
{{ 'ml-article-textbook-solutions-math-solver-scanner' | message }}
{{ 'ml-article-textbook-solutions-answers-hints-steps' | message }}
{{ 'ml-article-ecourses-interactive' | message }}
{{ 'ml-article-ecourses-chapter-tests' | message }}
{{ 'ml-article-ecourses-exercise-levels' | message }}
{{ 'ml-article-ecourses-rank-stats' | message }}
{{ 'ml-article-ecourses-video-lessons' | message }}
{{ 'ml-article-ecourses-course-theory' | message }}
{{ 'ml-article-ecourses-join-classroom' | message }}
{{ 'ml-article-ecourses-graphing-calculator' | message }}
{{ 'ml-article-ecourses-quiz-games' | message }}
{{ 'ml-article-ecourses-study-together' | message }}
{{ 'ml-article-community-create-and-share-channels' | message }}
{{ 'ml-article-community-share-content-and-challenge' | message }}
{{ 'ml-article-community-cooperate-with-friends' | message }}
{{ 'ml-article-worksheets-course1' | message }}
{{ 'ml-article-worksheets-course2' | message }}
{{ 'ml-article-worksheets-course3' | message }}
{{ 'ml-article-worksheets-course4' | message }}
{{ 'ml-article-math-solver-photo-scan-solve' | message }}
{{ 'ml-article-math-solver-step-by-step' | message }}
{{ 'ml-article-math-solver-graph-math-problem' | message }}