Ответ: b=-1,5.
Объяснение:
[tex]y=4x^2-x+b\ \ \ \ \ \ K(0,5;-1)\ \ \ \ \ \ b=?\\\\-1=4*0,5^2-0,5+b\\\\-1+0,5=4*0,25+b\\\\-0,5=1+b\\\\-1,5=b\ \ \ \ \ \ \Rightarrow\\\\y=4x^2-x-1,5[/tex]
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Ответ: b=-1,5.
Объяснение:
[tex]y=4x^2-x+b\ \ \ \ \ \ K(0,5;-1)\ \ \ \ \ \ b=?\\\\-1=4*0,5^2-0,5+b\\\\-1+0,5=4*0,25+b\\\\-0,5=1+b\\\\-1,5=b\ \ \ \ \ \ \Rightarrow\\\\y=4x^2-x-1,5[/tex]