GATE Exam Category

form differential eq of following function

y=(ae^x)+(be^-x)+c

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dy/dx=ae^x-be^-x
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GATE Other Question

A and B are two alloys of argentums and brass prepared by mixing metals in proportions 7:2 and 7:11 respectively. if equal quantities of the two alloys are melted to form a third alloys C , the proportion of argentums and brass in C will be ?? There are 254 women. A sales man asks each about which product they
use out of three
(A, B, C,) 22 use all three, 39 use B and C....... Each uses atleast one
product.
Find the number of women that use product C