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1. The integrating factor of the DE 2 coshx cosy dx = sinhx siny dy is (a) sinhx (b) coshx (c) tanhx (d) cothx 10. Let the n^th term of the series be (-1)^n (n+1)^n/n^n then the series is (a) convergent (b) divergent (c) inconclusive (d) None of the above 7. The solution curves to the DE 2xyy^1=y^2-x^2 are (a) the circles passing through the origin with centers on x-axis (b) The ellipse (c ) the hyperbolas (d) the parabolas

 
1. The integrating factor of the DE 2 coshx cosy dx = sinhx siny dy is
       (a) sinhx              (b) coshx          (c) tanhx             (d) cothx
10. Let the n^th term of the series be (-1)^n (n+1)^n/n^n then the series is (a) convergent (b) divergent (c) inconclusive (d) None of the above
7. The solution curves to the DE 2xyy^1=y^2-x^2 are
(a) the circles passing through the origin with centers on x-axis (b) The ellipse (c ) the hyperbolas (d) the parabolas

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Grade:12th pass

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