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5/2 x^2 + 2x^3/2 +c

You should be relaxed and read it first in a global way, paying attention to the structure of the text and those words you already know. Think outside of the box: pay special attention to the setting ( na...

Polymers may have a large environmental impact at all stages in their life. Oil extraction is energy intensive and may result in spills, directly affecting the local ecosystem. Oil processing to produce t...

We know that: (1) the radius of the circle to the point [4,3] is perpendicular to the tangent line, (2) if two lines are perpendicular, their gradients are negative reciprocals of each other, and (...

SER and ESTAR both mean 'To be' in English, but choosing the right one can be tricky. The most useful way to remember the difference is to decide whether what you are describing has a permanent/inbuilt qu...