I want to find d from 7*d mod 40=1 But error .help me please.

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Sakunrat Jaejaima
Sakunrat Jaejaima 2015-6-21
评论： Sakunrat Jaejaima 2015-6-22
I tried the codes but thereis no error shown. Matlab instead asked for/tried to open some matlab files
syms d Eqn=='7*d==1'; Sold=solve(eqn,d,Domain=Dom::IntegerMod(40))

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Azzi Abdelmalek
Azzi Abdelmalek 2015-6-21
编辑：Azzi Abdelmalek 2015-6-21
syms d
Eqn=7*mod(d,40)-1;
Sold=solve(Eqn,d)

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