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y=7-2x^5. What's dy/dx?Find an equation for the tangent to the curve where x=1. Is itan increasing or decreasing function when x=-2?

dy/dx=-10x^4When x-1, gradient =-10 Tangent is then: y+10x=15When x=-2, dy/dx=-160 so a decreasing function
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Answered by Khai L. • Maths tutor
4687 Views

How does one distinguish between the perfect tense (passé composé) and the imperfect tense (imparfait)?

The perfect tense (passé composé) is used to depict a single past action that has been completed. Specific time phrases such as 'last weekend' (le weekend dernier), 'last week' (la semaine dernière) and 'las...
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Answered by Emily I. • French tutor
3543 Views

Que era el papel de la mujer durante los años cincuenta? (utiliza el preterito imperfecto)

Suggested answer of something a pupil would be expected to say :Durante esa epoca las mujeres no TENÍAN mucho poder en la sociedad. CUIDABA a sus hijos mientras que los hombres TRABAJABAN. No HABÍA muchos de...
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Answered by Honor W. • Spanish tutor
2791 Views

Factorise the following: 21x(squared)-35x

The question is asking us to factorise, this means put the equation into a simplified bracket. The first step is to find the highest common factor (HCF), the HCF must be a factor of 21x 2 as well as -35x. I ...
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Answered by Annesa M. • Maths tutor
5516 Views

‘We’ve given them more than we’ve taken away, said the Commander.’ To what extent do you agree that women have gained under the Gileadean regime?

To begin with, if Atwood’s ‘The Handmaid’s Tale’ is viewed in a holistic way, it is clear that the Handmaids have lost many of their rights and freedom within the constraints of Gilead, in conjunction with t...
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Answered by Olivia W. • English tutor
6373 Views