document.write( "Question 1155520: Determine whether the Mean Value Theorem applies to the function f(x)=7-x^2 on the interval [-1,2]. if so, find the points that are guaranteed to exist by Mean Value Theorem. \n" ); document.write( "
Algebra.Com's Answer #778441 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The given function is a polynomial; it is everywhere continuous and differentiable, so the MVT applies.

\n" ); document.write( "f(-1) = 6; f(2) = 3; the two endpoints of the specified interval are (-1,6) and (2,3).

\n" ); document.write( "The slope of the secant determined by those two points is -1.

\n" ); document.write( "We need to find the point(s) in the specified interval where the derivative is equal to -1.

\n" ); document.write( "\"df%2Fdx+=+-2x+=+-1\"
\n" ); document.write( "\"x+=+.5\"

\n" ); document.write( "The point that is guaranteed by the MVT is (.5,6.75).

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