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Charismaztex
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Prove that cos:R-->[-1,1] is continuous at every a∈R
Prove that cos:R-->[-1,1] is continuous at every a∈R
N/A
If the function is right continuous at -1, and left continuous at 1, then should the function be continuous in the interval? so the limit of cos(x) as it approaches -1 from the right towards -1 should be the same as cos(-1), and vice versa for the other side. Please confirm or deny this.
Thanks in advance,
Charismaztex
Homework Statement
Prove that cos:R-->[-1,1] is continuous at every a∈R
Homework Equations
N/A
The Attempt at a Solution
If the function is right continuous at -1, and left continuous at 1, then should the function be continuous in the interval? so the limit of cos(x) as it approaches -1 from the right towards -1 should be the same as cos(-1), and vice versa for the other side. Please confirm or deny this.
Thanks in advance,
Charismaztex
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