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Evaluate the integral of cos(x)sin(x)(1+ sin(x))^3 with respect to x.

Substitution of 'u=1+sin(x)' is required.Differentiating this with respect to x gives cos(x)... therefore du=1/cos(x) dxmultiplying that through leaves the integral of sin(x)(1+sin(x))^3 which therefore can ...
Answered by • Maths tutor
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Why does water have a higher boiling point than methane?

Methane has van der Waal's forces between molecules whereas water has hydrogen bonds between molecules. Hydrogen bonds are stronger than Van Der Waal's forces and therefore require more energy to be broken.
Answered by • Chemistry tutor
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Explain how a mutation in the gene coding for an enzyme could lead to the production of a non-functional enzyme.

The base sequence changes so the amino acid sequence changes therefore leading to a change in the types and location of bond formation thus a change in the tertiary structure occurs. This prevents the enzyme...
Answered by • Biology tutor
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In what instances should the subjunctive be used?

The subjunctive is used to express wishes, emotions, impersonal expressions, doubt/denial and ojalá. To remember these situations, the acronym WEIRDO is very helpful. Example of impersonal expressions includ...
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Answered by Gabriel O. • Spanish tutor
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Soviet Union Section: To what extent was Brezhnev responsible for economic stagnation by 1985?

ESSAY PLAN: Viewpoint : Although it can be accepted that Khrushchev's economic policies, such as the 'Virgin Lands Scheme', partially contributed to economic decline, it is clear that apathy and economic rec...
Answered by • History tutor
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