Test:91 QNo:2

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find the eqn of circle with centre (2,1) and passing through point (4,0)

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Asish Mahapatra ·2009-08-29 23:57:37

Q2 find the eqn of circle with centre (2,1) and passing through point (4,0)
a) x²+y²+4x+2y=0
b) x²+y²-4x+2y=0
c) x²+y²+2x+y=0
d) x²+y²-4x-2y=0
Your Answer: (d)
Correct Answer: (a)
Score: -1
Explaination :
(x-2)²+(y-1)²=(4-2)²+(0-1)²

The answer should be (d) as its centre is (2,1) and passes through (4,0) while (a) does not

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Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

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Test:91 QNo:2

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