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Use the intermediate value theorem to determine whether the polynomial function has a real zeros between the given integers.
f(x)= -5x^4 + 8x^3 +6x +1; between 1 and 2

Sagot :

Konrad509idn
[tex]f(1)=-5\cdot1^4+8\cdot1^3+6\cdot1+1=-5+8+6+1=10\\ f(2)=-5\cdot2^4+8\cdot2^3+6\cdot2+1=-80+64+12+1=-3\\\\ f(1)>0\\ f(2)<0\\ \Downarrow[/tex]
It does.
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