y=sin(x/2)+cos(x/2),x∈(-2π,2π)的增区间是?
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![y=sin(x/2)+cos(x/2),x∈(-2π,2π)的增区间是?](/uploads/image/z/14305426-34-6.jpg?t=y%3Dsin%28x%2F2%29%2Bcos%28x%2F2%29%2Cx%E2%88%88%28-2%CF%80%2C2%CF%80%29%E7%9A%84%E5%A2%9E%E5%8C%BA%E9%97%B4%E6%98%AF%3F)
y=sin(x/2)+cos(x/2),x∈(-2π,2π)的增区间是?
y=sin(x/2)+cos(x/2),x∈(-2π,2π)的增区间是?
y=sin(x/2)+cos(x/2),x∈(-2π,2π)的增区间是?
y=√2*sin(x/2+π/4) x/2+π/4∈(-π/2+2kπ,π/2+2kπ)
故x∈(-3π/2,π/2)
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