How differentiate without using any built-in function
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I have the equation for displacement ye=sqrt(t.^2-ft.^2) where ft is a constant and ft is an equation containing x with the array [0:0.001:2*pi], how would you find velocity without using and built in functions. I have tried using a loop and the definition of derivative, however this does not seem to work.
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KSSV
2020-3-4
YOu calculate your array by substituing the required values...and use
dy = diff(ye)/dt ; % where dt is step size
4 个评论
Ethan Jones
2020-3-4
KSSV
2020-3-4
diff is nothin but:
for i = 1:n
dye = ye(i+1)-ye(i)
end
Ethan Jones
2020-3-4
Steven Lord
2020-3-4
diff is nothin but:
which would still violate the rules of the assignment, technically, if for no other reason than the - operator is just another name for the minus built-in function.
If the professor wants to prohibit any built-in function there's not that much you can do (without cheating by writing a MEX-file or something similar.) If they want to be more specific and prohibit certain built-in functions that's potentially a fairer question (depending on what they disallow.)
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