Maths
This question was asked in Ex 1.2, 5

sir EX 1.2,5 For checking onto given there is no pre imagefor y=2, y=100 etc..but in signum functions its domain is 1  https://www.teachoo.com/3914/1163/Ex-1.2--5---Show-Signum-Function-is-neither-one-one-nor-onto/category/To-prove-injective--surjective--bijective-(one-one---onto)/ mage for y=2

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ALIF MUHAMMED
Oct. 4, 2018, 10:13 p.m.

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