Homework Statement
I am doing a project on the Elenco AM/FM superheterodyne radio kit. I have been stuck for ages trying to figure out how the two common emitter amplifiers are tuned to filter out anything that is not around 455 kHz. I tried to find a bandpass filter, or a high-pass and a...
Thank you so much! Yeah, makes so much sense now! Simply by remembering to infer that H is the closest point on the line to A got me going. Thanks again!
Homework Statement
Let \Delta be a line and A a point in space.
[itex ] B [/itex] is a point on \Delta ans H is a point on \Delta such that \newcommand{\vect}[1]{\vec{#1}} \vec{AH} \perp \Delta .
a) Show that \| \vec{AH} \| \leq \| \vec{AB} \| (a geometric reasoning should be used)...