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Show that the function f(x) = x4 + 3x + 1 has exactly one zero on the
interval [−2,−1].
 one year ago
 one year ago
Show that the function f(x) = x4 + 3x + 1 has exactly one zero on the interval [−2,−1].
 one year ago
 one year ago

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mahserindortatlisiBest ResponseYou've already chosen the best response.0
afterthat what can we proof is there a 0 point between domain
 one year ago

mahserindortatlisiBest ResponseYou've already chosen the best response.0
how can sorry
 one year ago

mahserindortatlisiBest ResponseYou've already chosen the best response.0
can you explain the solution by writing step by step? :) it's urgent :(
 one year ago

cwrw238Best ResponseYou've already chosen the best response.1
derivative is 4x^3 + 3 4x^3 + 3 < 0 for negative gradient x^3 < 3/4 x < (3/4)^(1/3) = approx 0.9 this is greater than 1 so the graph is decreasing over the period 2,1 find value of function atx = 2 and 1 f(2) = (2)^4 + 3(2) + 1 = 11 f(1) = 2 meaning it has crossed the xaxis at most once over the period
 one year ago

mahserindortatlisiBest ResponseYou've already chosen the best response.0
thank u for solution crw238 :)
 one year ago
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