WHAT WAS FOURIER SERIES AND STARTING OF TRANSFORM

NORMALLY WE ALL OF KNOW THE METHOD OF TRANSFORMATION AND GET
 ANSWER BUT WHAT WAS THE CONCEPT BEHIND THEM MUST BE KNOW. AND TRANSFORMING FROM ONE DOMAIN TO ANOTHER DOMAIN IS NOT A METHOD OR CHANGNING THEM. IT USE FOR SIMPLER TECHNIQUE COZ IN PRACTICALLY TIME AND FREQUENCY ARE VERY CORELLATED CONCEPT THE CONCEPT BEHIND THEM IS ONLY "IF A SIGNAL WITH HIGH FREQUENCY AND IT IS NOT POSSIBLE TO ANALYSIS IT THEN SHIFT THAT EQUCATION ON TIME=INFINITE SCALE THEN THE FREQUENCY WILL BE ALMOST ZERO OR CAN SAY IN LIMIT OF ANALYSIS SO IT IS ONLY A VIEW WHICH SOLVE THE COMPLEX NUMERICAL"

NOW HOW IT IS POSSIBLE FOR AN EXAMPLE U HAVE A VELUE 6S THEN FOR ANALYSIS IT WE CAN BREAK IT IN VERY SHORT HARMONICS SAY S+s+s+s+s+s THEN CAN OBSERVE IT VERY CAREFULLY, SIMILERLY IF U WANT TO ANALYSIS ANY WAVE WITH CERTAIN PERIOD THEN U CAN BREAK IT IN HARMONICS OF SINE AND COSINE MEANS ANY COMPLEX SIGNAL MAY BE EASY IF U BREAK THAN IN HARMONICS OF SINE AND COSINE AND GET A REQUIRED SIGNAL AFTER SUMMING THAT. IT IS VERY BASIC APPROACH


SEE EXAMPLE AND ANALYSIS HOW SINE COSINE HARMONICS WORKS AND WHY WE USE CONSTANT A AND B IN FORMULA