how i can find the convolution by integral convolution?

2018 2 24
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my functions as follow:
f1 = (1./(t*log(10))); %over the interval(0.1 , 1);
f2 = (1/sqrt(2*pi*1))*exp((-t.^2)/(2*11)); %Gaussian with zero mean and variance =1 (-inf ,inf)
I tried this cod but dosnt work any one could check it pleas Many Thanks
if true
syms t toe
f1=(1/sqrt(2*pi*0.3))*exp((-toe.^2)/(2*0.3));
f2=(1./((t-toe)*log(10)));
conv_ans =int(f1*f2,toe,-inf,inf)
fplot(conv_ans)
end

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