Word Count : 305

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हमें दो सदिश फलन दिए गए हैं: $$ \mathbf{a}(t) = (t^3 - t)\mathbf{i} + (3t + 4)\mathbf{j} + 2t^2\mathbf{k} $$ $$ \mathbf{b}(t) = (7 - t^2)\mathbf{i} + (4 + 6t)\mathbf{j} - 6t^3\mathbf{k} $$ हमें $\mathbf{a}(t) \cdot \mathbf{b}(t)$ का अवकलज निकालना है और फिर $t = 1$ पर उसका मान ज्ञात ____ _______ ________ _________ __________ ______ ___ _________ ____ ___.
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