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Differentiate with respect to x. y(x) = e^(7x^2)

dy/dx = 14xe^(7x^2)
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Answered by Pablo M. • Maths tutor
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A pipe has one open and one closed end. Determine the ratio of the frequency of the first harmomic to that of the next harmonic.

The first harmonic has wavelength λ 1 = 4L and the next harmonic has wavelength λ 2 = 4L/3 . Hence :f 1 /f 2 = (4L/3)/4L = 1/3
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Answered by Pablo M. • Physics tutor
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Define the Principle of Original Horizontality

The Principle of Original Horizontality states that all sedimentary layers are originally deposited horizontally.
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Answered by Amy M. • Geology tutor
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Evaluate the Behavioural Approach in Psychology

A strength of the behavioural approach is that it is one of the most objective approaches in psychology. This approach primarily centres around the use of lab studies in which observable behaviour is used to...
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Answered by Tom H. • Psychology tutor
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how are island arcs created

hot spots in the earths core cause intense heating of the crust. This heating causes magma to rise and break the sea floor. a volcano is formed. Over time, due to tectonic plate movement (wegener) the crust ...
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Answered by Rory H. • Geography tutor
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