lf the roots of (x - a)(x - b) + (x - b)(x - c) + (x - c)(x - a) = 0 are equal, then
If int(0)^(oo) e^(-x^(2))dx=sqrt((pi)/(2))"then"int(0)^(oo) e^(-ax^(2)
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int 0^pi/2e^xsinx dx is equal to
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