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What is the major causes of root concavity
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What is the major causes of root concavity

User Dominus
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Root concavity is caused by shrinkage of the weld pool in the through thickness direction of the weld.
User Juliushuck
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User Nimda
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Find the points of inflection and discuss the concavity of the function f(x)=sinx+cosx on the interval (0,2π).
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