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There is an initial subtle difficulty to this question, and it highlights understanding of the relationship between natural logarithms and the exponential function. One of the ways to solve this question,...

In Spanish, there are two past tenses; the preterite and the imperfect.

The preterite tense is used to describe a definitive, one-time action that has taken place and ended. For example, 'yesterday...

The perfect tense is used for completed actions in the past, or for actions in the past that have an impact on the present. It can translate to the English perfect tense, but also the English preterite. F...

Humans and other mammals keep their body temperature within just a few degrees of 37 degrees celcius. To achieve homeostasis of body temperature, three components are involved: a receptor, a co-ordinator,...

Pythagoras' Theorem: a² + b² = c²     where a, b, c relate to the sides of a right-angled triangle, and c is the hypoteneuse.

Use the equation to find the length on...