admin百科知識 2022-02-13 18:45:12 化簡:2sin^4x+34sin^2(2x)+5cos^4x-12(cos4x+cos2x)化簡:2sin^4x 3sin^2(2x) 5cos^4x-1(cos4x cos2x)網友廻答：匿名網友2sin^4x 3\4sin^2(2x) 5cos^4x-1\2 (cos4x cos2x) =2sin^4x 3\4sin^2(2x) 5cos^4x-1\2【cos^4(x) sin^4(x)-6sin^2(x)cos^2(x) cos^2(x)-sin^2(x)】=【3/2sin^4(x) 6sin^2(x)cos^2(x) 9/2cos^4(x)】 - 1/2 cos^2(x) ... db標簽 生活常識_百科知識_各類知識大全»化簡:2sin^4x+34sin^2(2x)+5cos^4x-12(cos4x+cos2x)
admin+5cos^4x-12(cos4x+cos2x).jpg "化簡:2sin^4x+34sin^2(2x)+5cos^4x-12(cos4x+cos2x),第1張")
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