(A) AB+BC+CA=0 (closed triangle) - True.
(B) AB+BC−AC=AC−AC=0 - True.
(D) AB−CB+CA=AB+BC+CA=0 - True.
Options (C) and (E) give 2AC=0. Hence (A), (B), (D) only.
If C(x)=ax2−bx−c represents the total cost function then the slope of the tangent to the marginal cost curve at the point (x,y) is :
Held on 30 May 2023 · Verified 13 Jul 2026.
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If the total cost and total revenue of a company that produces and sells $x$ units of a particular product are $C(x) = 5x + 350$ and $R(x) = 50x - x^2$ respectively, then which of the following is/are the breakeven values: (A) $x = 10$ (B) $x = 25$ (C) $x = 45$ (D) $x = 30$ Choose the correct answer from the options given below:
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