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What does __init__ mean?

There are more than one use for the expression init in Python. If you see a file named init .py in a directory, it means that directory should be treated as a package (collections of variable, function and c...
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Answered by Callum W. • Python tutor
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Compute the indefinite integral of x^8 ln(3x)dx

Using integration by parts, by substituting ln(3x) as u and x^8 as dv/dx, use the formula to plug in the values and complete the calculation to get (x^9)(ln(3x)-1/9)/9
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Answered by Pawel P. • Maths tutor
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How would I differentiate y=2(e^x)sin(5x) ?

We can see that we have the product of two different functions, and so we need to use the product rule. We will separate the function and label each part u and v for clarity. So we let u = 2e x and let v = s...
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Answered by Scott P. • Maths tutor
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Bob and Brenda are both heterozygous for a genetically inherited recessive trait. (a) Calculate the probability that they would have a healthy child. Use a genetic diagram to help. (b) Suggest an example of a recessive inherited disorder

Heterozygous means that the parents both carry a dominant allele (A) and a recessive allele (a). Dominant alleles are always expressed in the phenotype. Recessive alleles are expressed in the phenotype only ...
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Answered by Charlotte M. • Biology tutor
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Neurons do not make direct contact but are separated by synapses. Impulses cross a synapse by means of a neurotransmitter. Describe the process of neurotransmitter release at a synapse. You may use a labelled diagram.

Action potential arrives at axon terminal of presynaptic neuron Voltage-gated Ca2+ channel opens Ca2+ enters the cell Ca2+ signals to vesicles Vesicles move to the membrane Neurotransmitters are released by ...
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Answered by Charlotte M. • Biology tutor
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