Equation of tangent to curve \( y=\left|x^{2}-13 x+40\right| \) at point \( x= \) 6 is
(a) \( x+...
Equation of tangent to curve \( y=\left|x^{2}-13 x+40\right| \) at point \( x= \) 6 is
(a) \( x+y+4=0 \)
(b) \( x-y-4=0 \)
(c) \( x+y=4 \)
(d) \( x-y+4=0 \)
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