CBSE Class 12 Mathematics 2026 Main Paper 65/2/1 · Q71 Marksimplicit_derivatives CBSE Class 12 Mathematics 2026 Main Paper 65/2/1 · Question 7 (Continuity And Differentiability) If e⁻ˣ+e⁻ʸ=2, find dy/dx. (A) e raised to (x−y)(B) e raised to (y−x)(C) −e raised to (x−y)(D) −e raised to (y−x)