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How do I find the intersection of a line and a curve?

Say you are given the equations of both a line and a curve, for example y=x 2 +8x-1 and y=3x-7 , and asked to find where these two intersect. This just means where the two lines would cross or touch if drawn...
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Answered by Lauren M. • Maths tutor
142962 Views

When red light is shone on a metal, regardless of the intensity of this light, no current will flow. However if blue light is shone on this metal a current will flow. Why does this occur?

This problem can be solved by first considering the energy of a photon e = hf. ​A photon of red light lacks the sufficient energy to free an electron. However a photon of blue light has a higher frequency an...
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Answered by Jonathan P. • Physics tutor
7125 Views

Discuss the role of foreshadowing in Of Mice and men.

There's many instances of foreshadowing in the novella, most of the scenes point towards the tragic ending. Steinbeck frequently hints towards the climax of the novella through his use of dialogue. George in...
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When and how do I use integration by parts?

Integration by parts is used when you would like to find the integral of a composite function made up of two functions of the same variable as which you're integrating with respect to. The formula for this t...
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Answered by Craig Y. • Maths tutor
6231 Views

Solve the simultaneous equations 2x + 3y = 4, 3x + 6y = 3

Label the equations (1): 2x + 3y = 4 (2): 3x + 6y = 3We need the same number of x's or y's in the equations, so multiply (1) by 3 and (2) by 2 giving (3): 6x + 9y = 12 (4): 6x + 12y = 6Subtract (3) from (4) ...
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Answered by Sophie S. • Maths tutor
10727 Views