Thursday, 16 February 2017

arithmetic - magnitude of a root of complex expression plus complex expression

If I had an expression |a+bi+(c+di)|2, how would I evaluate this? I know how to evaluate the magnitude of a complex expression or the root of a complex expression separately but not when they are combined.

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...