Math Problem Statement

V artimetičnem zaporedju je prvi člen -12, deveti pa 12. Izračunajte diferenci in trinajsti člen. Koliko členov je potrebno sešteti, da dobimo vsoto 204?

Solution

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Math Problem Analysis

Mathematical Concepts

Arithmetic Sequences
Summation of Series
Quadratic Equations

Formulas

General term of an arithmetic sequence
Sum formula for arithmetic sequences
Quadratic equation formula

Theorems

Arithmetic sequence properties
Quadratic equation solutions

Suitable Grade Level

High School