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OpenStudy (anonymous):
what am i doing wrong here Consider the function f(x)=2x^2+6x+9 on the interval [−4,7]. Find the average or mean slope of the function on this interval when I plug in 7 into the equation i get 780, and when I plug in -4, I get -47. To find the mean slope (780-(-47))/(7-(-4)) = 71 71 wont work however
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OpenStudy (turingtest):
\[f(7)\neq780\]
OpenStudy (anonymous):
i got 149 when x=7
OpenStudy (turingtest):
\[f(-4)=17\]I mean
OpenStudy (experimentx):
damn .. what I am getting f(7)-f(-4) = 132
OpenStudy (experimentx):
and avg slope is 12 ...
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OpenStudy (anonymous):
i got it thanks
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