Hello!
Recall that:
can be rewritten as:
Use the equation for the derivative of a log expression:
Substitute in the values in the expression:
Find the equation of the line with slope −2 which goes through the point (9,−7).
2 answers:
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Use the remainder theorem: we can decompose the given polynomial in terms of quotient and remainder polynomials and
, respectively, such that
Then letting x = -3 makes the quotient term vanish, and we're left with a remainder of