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OpenStudy (anonymous):
The slope of y = x 2 + kx - 1 at x = 1 is 5. Find k. 0 2 3 5 @Data_LG2 @FibonacciChick666 is it 3?
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OpenStudy (fibonaccichick666):
work?
OpenStudy (anonymous):
i used the nth rule to find derivative: y'=2x+k-0 or y'=2x+k. Since y'=5 and x=1, i solved the following 5=2*1+k-------> k=3
OpenStudy (fibonaccichick666):
yep yep I agreee
OpenStudy (anonymous):
thank you very much. now i at least can be sure i know something about derivatives!!
OpenStudy (fibonaccichick666):
:) no probs
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OpenStudy (anonymous):
keep up the good work @ksanka ! :)
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