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If △=∣∣∣∣∣∣∣∣∣sinπcos(x+π4)tan(x−π4)sin(x−π4)0ln(xy)cot(x+π4)ln(yx)0∣∣∣∣∣∣∣∣∣, for x∈(0,π)−{π4,3π4},y>0. Then the value of (△+9)= |
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Answer» If △=∣∣ ∣ ∣ ∣ ∣ ∣ ∣∣sinπcos(x+π4)tan(x−π4)sin(x−π4)0ln(xy)cot(x+π4)ln(yx)0∣∣ ∣ ∣ ∣ ∣ ∣ ∣∣, for x∈(0,π)−{π4,3π4},y>0. Then the value of (△+9)= |
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