y=-2sin(x+π/4)-1和y=sin²x-sinx+1当x∈R或x∈[π/2,π]时的最值分别是

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y=-2sin(x+π/4)-1和y=sin²x-sinx+1当x∈R或x∈[π/2,π]时的最值分别是
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y=-2sin(x+π/4)-1和y=sin²x-sinx+1当x∈R或x∈[π/2,π]时的最值分别是
y=-2sin(x+π/4)-1和y=sin²x-sinx+1当x∈R或x∈[π/2,π]时的最值分别是

y=-2sin(x+π/4)-1和y=sin²x-sinx+1当x∈R或x∈[π/2,π]时的最值分别是
y=-2sin(x+π/4)-1
x∈R,y∈[-3,1]
x∈[π/2,π],y∈[-√2-1,√2-1]
y=sin²x-sinx+1
=(sinx-0.5)²+0.75
x∈R,y∈[0.75,3]
x∈[π/2,π],y∈[0.75,1]

y=-2sin(x+π/4)-1;当x∈R时的最大值和最小值分别是1; -3;
x∈[π/2,π]时的最大值和最小值分别是:√2-1; -√2-1
y=sin²x-sinx+1当x∈R时的最大值和最小值分别是 3 ; 3/4
x∈[π/2,π]时的最大值和最小值分别是1...

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y=-2sin(x+π/4)-1;当x∈R时的最大值和最小值分别是1; -3;
x∈[π/2,π]时的最大值和最小值分别是:√2-1; -√2-1
y=sin²x-sinx+1当x∈R时的最大值和最小值分别是 3 ; 3/4
x∈[π/2,π]时的最大值和最小值分别是1; 3/4

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