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Compare the following logarithms in base 1/2 without a calculator: log(8) and log(512)

Compare through subtraction : log_0.5(8)- log_0.5(512) = xUsing logarithm rule in addition/subtraction: log_a (b)+log_a(c) = log_a(b*c) ; log_a

Answered by Gael A. • Maths tutor

3018 Views

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

Answered by Khai L. • Maths tutor

4232 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 '...

Answered by Emily I. • French tutor

2810 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...

Answered by Honor W. • Spanish tutor

2218 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 21x² as wel...

Answered by Annesa M. • Maths tutor

4470 Views