18. The figure below shows the graph of the line tangent to the graph of \( f \) at \( x = 0 \).
Of the following, which must be true?
\( f'(0) = -f(0) \)
\( f'(0) = f(0) \)
\( f'(0) > f(0) \)
\( f'(0) < f(0) \)
Answer is: option2
Solution:
.
