£ - знак производной (;
1/2•£ π/12 -π/12(cos6x)dx = 1/2•1/6•sin6x |π/12 -π/12 = 1/12sin(π/2) - 1/12sin(-π/2) = 1/12+1/12 = 2/12 = 1/6
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£ - знак производной (;
1/2•£ π/12 -π/12(cos6x)dx = 1/2•1/6•sin6x |π/12 -π/12 = 1/12sin(π/2) - 1/12sin(-π/2) = 1/12+1/12 = 2/12 = 1/6