Question

Determinați funcția :
( URGENT )

Answer 1

Explicație pas cu pas:

a) f(-1)=-3 => -a+b=-3

f(1)=1 => a+b=1

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(+) 2b=-2 => b=-1

a-1=1 => a=2

f(x)=2x-1

b) f(-2)=-5 => -2a+b=-5

f(0)=1 => b=1

-2a+1=5 => a=-2

f(x)=-2x+1

c) A€Gf => f(1)=4 => a+b=4

B€Gf => f(-2)=7 => -2a+b=7

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(-) 3a=-3 => a=-1

-1+b=4 => b=5

f(x)=-x+5

d)A€Gf => f(rad(2))=1 => a*rad(2)+b=1

B€Gf => f(1)=rad(2) => a+b=rad(2)

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(-) -(1-rad(2))*a=1-rad(2)

=>a=-1

-1+b=rad(2) => b=1+rad(2)

f(x)=-x+1+rad(2)