Question

need help on the attachment

Answer 1

you still here?

Answer 2

guess not. idea is find
\[f(0), f'(x), f'(0)\] and then use point slope formula to find the equation for the line. i will write it out in any case

Answer 3

\[f(x)=\frac{1}{\sqrt{5+x}}\]
\[f(0)=\frac{1}{\sqrt{5}}\]
\[f'(x)=-\frac{1}{2(x+5)^{\frac{3}{2}}}\]
\[f'(x)=-\frac{1}{5^{\frac{3}{2}}}=-\frac{1}{5\sqrt{5}}\]\]

Answer 4

so by point-slope formula your line is
\[y=-\frac{1}{5\sqrt{5}}x+\frac{1}{\sqrt{5}}\]

Answer 5

ok a mistake i forget the 2 in the denominator of the derivative
it is
\[y=-\frac{1}{10\sqrt{5}}x+\frac{1}{\sqrt{5}}\]

Answer 6

looks like choice 3

Answer 7

http://openstudy.com/users/ta123#/users/ta123/updates/4e94f0460b8b7d552aec4574

Answer 8

hah i forgot the 2 as well! lololol