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प्रश्न
Derive a demand curve from the demand function Qd = 20 − 4 P.
व्युत्पत्ती
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उत्तर
Qd = 20 − 4P
Step 1: Calculate values for different prices
| Price (P) | Quantity Demanded (Qd) |
| 0 | Qd = 20 − 4(0) = 20 |
| 1 | Qd = 20 − 4(1) = 16 |
| 2 | Qd = 20 − 4(2) = 12 |
| 3 | Qd = 20 − 4(3) = 8 |
| 4 | Qd = 20 − 4(4) = 4 |
| 5 | Qd = 20 − 4(5) = 0 |
Step 2: Plot the Demand Curve
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X-axis: Quantity demanded (Qd)
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Y-axis: Price (P)
The curve will be straight and downward sloping, showing the inverse relationship between price and quantity demanded.
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