Given $P(x) = ax^3 + bx^2 + cx + d$ where $ \vert P(x) \vert \le 1\; \forall \vert x \vert \le 1$ Prove: $$ \vert a \vert + \vert b \vert + \vert c \vert + \vert d \vert \le 7$$ Hopes you guys can help me with this problem. Thank you so much!!!!!!
2026-03-26 19:03:50.1774551830
Problem require Lagrange interpolation
63 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in LAGRANGE-INTERPOLATION
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