The function f(x,y) =xy/(1+x) is continuousevery whereTrue OFalse OIf f(x.y)=(x^3)+(y^3), and x(t)=3(t^2)„y(t)=cos(2t), then aflat is:*. (18(t^4)-6(cos(2t)^2)sin(2tTrue OFalse OIf the vector u = 2i-3j+v3k , then the length* of u is -v2True OFalse O

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If the vector u = 2i-3j+v3k , then the length of u is -v2 True O False

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

The function f(x,y) =xy/(1+x) is continuous
every where
True O
False O
If f(x.y)=(x^3)+(y^3), and x(t)=3(t^2)
„y(t)=cos(2t), then aflat is:
*. (18(t^4)-6(cos(2t)^2)sin(2t
True O
False O
If the vector u = 2i-3j+v3k , then the length
* of u is -v2
True O
False O

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