Sawtooth wave, function and graph

y=sin(2*pi*x)+1/2*sin(2*[2*pi*x])+1/3*sin(3*[2*pi*x])+1/4*sin(4*[2*pi*x])+1/5*sin(5*[2*pi*x])+1/6*sin(6*[2*pi*x])+1/7*sin(7*[2*pi*x])+1/8*sin(8*[2*pi*x])+1/9*sin(9*[2*pi*x])+1/10*sin(10*[2*pi*x])+1/11*sin(11*[2*pi*x])+1/12*sin(12*[2*pi*x])


Graph of the formula

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