19 Form the equation of the squared differences of the cubic. X3-7x+6=0
22 Prove that the set R= {0,1,2,3,4} is a ring with respect to addition and multiplication.
23 Separate in to real and imaginary parts the quantity tan-1 (CosO+ isino).
22 If u = log tan(11/4+0/2),then prove that tanhu/2 = tan0/2.
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19 problem x3+0x2+7x+6=0
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