Top answers

What is the equation of the tangent to the curve y=x^3+3x^2+2 when x=2

dy/dx=3x^2+6xx=2m=3(2)^2+6(2)=24at x=2 y=22(2,22)y-22=24(x-2)y-22=24x-48y=24x-26
KH
Answered by Kieran H. • Maths tutor
4391 Views

What is meant by the term optical isomerism?

Optical isomerism is a form of stereoisomerism (different arrangement of the same atoms in 3D space) which is caused by the presence of a chiral carbon in a molecule. A chiral carbon is a carbon with four di...
SM
Answered by Sophie M. • Chemistry tutor
2788 Views

Explain the formation of an action potential in a neuron

Firstly, depolarization of the neuronal membrane occurs. This is due to a stimulus which causes voltage-gated sodium ion channels to open, allowing sodium ions to diffuse down their concentration gradient in...
SM
Answered by Sophie M. • Biology tutor
3784 Views

Describe the ways in which the pancreas acts as both an endocrine and exocrine gland

The Endocrine part of the Pancreas is the Islets of Langerhans which contain alpha and beta cells. These cells secrete hormones directly into the blood. The alpha cells secrete glucagon and the beta cells se...
ES
Answered by Esther S. • Biology tutor
7276 Views

Explain the way in which blood moves throughout the heart, including nodes and valves.

First, the blood enters through the right and left atria. The atrioventricular valves are closed, so the blood pools up inside them. Then, the sinoatrial node (SAN) sends a pulse for the atria to contract, f...
NR
Answered by Nicole R. • Biology tutor
2156 Views