41 number questions
let R1 be an equivalence relation on set A.for x,y is an element of set A ,defined by xR2y biimplies xR1y and yR1x ,then show that R2 isan equivalence relation on set A
any shorter solutions for the question 12
tan inverse (x-1/x+1)+tan inverse(x+1/x+2)=pi/4 solve for x
I want to learn maths
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