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March 28, 2015

March 28, 2015

Posted by **HELP MEE PLEASE** on Thursday, April 18, 2013 at 7:10pm.

f′ (3/4)if f(x) = −3x^3 − 7x^2 + 4x − 11

- calculus -
**Reiny**, Thursday, April 18, 2013 at 8:16pmagain, what is so difficult here?

f ' (x) = -9x^2 - 14x + 4

f ' (3/4) = -9(9/16) - 14(3/4) + 4

= -185/16

after finding a common denominator of 16 and combining the fractions

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