Bezout's identity: Let a and b be integers with greatest common divisor d. Then, there exist integers x and y such that ax + by = d.
Is it true that if a > b then ax < by? Is there a proof for this?
How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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