Math Problem Statement

Berikan contoh fungsi f dan g yang keduanya tidak kontinu di titik c di R, tetapi jumlah f+g kontinu di c dan hasil kali fg kontinu di c: 

Solution

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Math Problem Analysis

Mathematical Concepts

Continuity of Functions
Piecewise Functions
Limits
Pointwise Continuity

Formulas

f(x) = 1, x ≠ 0; f(x) = 0, x = 0
g(x) = -1, x ≠ 0; g(x) = 0, x = 0
f(x) + g(x) = 0 for all x
f(x) * g(x) = -1, x ≠ 0; 0, x = 0

Theorems

Continuity of function sums
Continuity of function products
Limit of piecewise functions

Suitable Grade Level

Undergraduate Mathematics (Calculus)