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Andrew1999t
@Andrew1999t
July 2022
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Алгебра 11 класс помогите решить 4-5 заданий, даю 100 баллов
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sedinalana
Verified answer
1а
f`(x)=-20x³+12x²+12x+2
f`(1)=-20+12=12-2=2
1б
f`(x)=tgx+x/cos²x
f`(π/4)=tgπ/4+π/4:cos²(π/4)=1+π/4:1/2=1+π/2
2a
f`(x)=[2(3x-2)-3(2x+3)]/(3x-2)²=(6-4-6x-9)/(3x-2)²=-13/(3x-2)²
2б
f`(x)=
2в
f`(x)=
2г
f`(x)=4/2√(4x-3)=2/√(4x-3)
3
y`=-3sin3x
y`(-π/6)=-3sin(-π/2)=-3*(-1)=3
4
y`=3x²-8x+5=0
D=64-60=4
x1=(8-2)/6=1
x2=(8+2)/6=5/3
7
f`(x)=1/√(5+sinx) *1/2√(5+sinx) *cosx=cosx/2(5+sinx)
2 votes
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Answers & Comments
Verified answer
1аf`(x)=-20x³+12x²+12x+2
f`(1)=-20+12=12-2=2
1б
f`(x)=tgx+x/cos²x
f`(π/4)=tgπ/4+π/4:cos²(π/4)=1+π/4:1/2=1+π/2
2a
f`(x)=[2(3x-2)-3(2x+3)]/(3x-2)²=(6-4-6x-9)/(3x-2)²=-13/(3x-2)²
2б
f`(x)=
2в
f`(x)=
2г
f`(x)=4/2√(4x-3)=2/√(4x-3)
3
y`=-3sin3x
y`(-π/6)=-3sin(-π/2)=-3*(-1)=3
4
y`=3x²-8x+5=0
D=64-60=4
x1=(8-2)/6=1
x2=(8+2)/6=5/3
7
f`(x)=1/√(5+sinx) *1/2√(5+sinx) *cosx=cosx/2(5+sinx)