calc
posted by Brian .
Verify that the function satisfies the three hypotheses of Rolle's Therorem
on the given interval. Then find all numbers c that satisfy the conclusiton
of Rolle's Theorem. f(x)= x*sqrt(x+6) [6,0]
f is continuous and differential
f(6) =6*sqrt(6+6) =0
f(0)=0
f(x) = x (x+6^1/2)
f'(x)= (x+6^1/2) + (1/2x +6)^1/2
0=(x+6^1/2) + (1/2x +6)^1/2
x=2.918
I don't think this is correct so could you please tell me what I did wrong?
Thanks.
f(x)= x*sqrt(x+6)>
f'(x) = sqrt(x+6) + x/[2sqrt(x+6)]
f'(x) = 0 >
x = 4
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