# Did You Know what Actually is Point of Inflection ? ( Part-2 )

Calculus Level 5

From the point $$P(h,2-5h),\ h \in \mathbb{R},\ ( h \neq 1)$$ two distinct tangents are drawn to the curve :

$$y={ x }^{ 3 } - { 3x }^{ 2 } - ax +b$$.

Find value of $$a + b.$$

Try : part-1

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