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How would you differentiate 3x^4 - 2x^2 + 9x - 1

First we follow the "times by the power and take one from the power" rule. This is the easiest way to remember how to differentiate anything. 

So (3x4)x(4-1) -(2x2)x(2-1)<...

CE
Answered by Cathy E. Maths tutor
3464 Views

How come the antibodies in our blood and lymphatic system do not attack our own, but only specific antigens?

Antibodies and antigens are made out of proteins. Proteins have a specific primary structure. The primary structure is the sequence of the amino acids that make up the protein. This sequence is specific t...

CU
Answered by Cassandra U. Biology tutor
2976 Views

How do you get from an a base like adenine to an enzyme/protein?

There are four bases- ATGC adenine, thymine guanine and cytosine.

Each base is attached to a deoxyribose sugar and a phosphate sugar. This makes up a nucleotide. Three nucleotides are called a codo...

JJ
Answered by Joshny J. Biology tutor
3005 Views

Relationship between moles and Avogadro's constant

Moles equation is moles= mass/RFM Avogadro's constant is 6.x 1023

1 mole means 6x 1023 atoms/molecules. 

e.g. 2 mole of Cu weighs 128g. What is the weight of 1 Cu ato...

JJ
Answered by Joshny J. Chemistry tutor
11972 Views

Integrate the following expression with respect to x by parts: (2*x)*sin(x)

The integration by parts formula: S:udv/dx = uv -  S:v*du/dx, where S: means "Integral of with respect to x" 

Let 2*x be u and sin(x) be dv/dx

So du/dx =2 and v= -cos(x)

DP
Answered by David P. Maths tutor
3428 Views

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