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Tutor profile: Pierre A.

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Pierre A.
My name is Pierre and I graduated from Iowa State University with a degree in Materials Engineering 2 years ago. Since then I have been work
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Questions

Subject: Spanish

TutorMe
Question:

Please translate the following sentence from English to Spanish: She did not know that the burglar was in her house.

Inactive
Pierre A.
Answer:

Ella no sabía que un ladrón estaba en sú casa

Subject: Calculus

TutorMe
Question:

Differentiate the following equation: cos(3x^3)

Inactive
Pierre A.
Answer:

Using the chain rule: -9x^2sin(3x^3)

Subject: Materials Science

TutorMe
Question:

Are grain boundaries more susceptible to growth or shrink while applying heat to a metallic material?

Inactive
Pierre A.
Answer:

Grain boundaries are more susceptible to shrink when applying heat to a material due to the thermal expansion of the material itself pushing the grains bigger and the boundaries of those grains more compact and close to each other.

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