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e^x = 3^(x-2)
ln(e^x) = ln(3^(x-2)) .......taking ln on both sides...
x = (x-2)ln3 .......simplification, and dropping the power rule.
x = (ln3)x - 2ln3
2ln3 = (ln3 - 1)x
x = (2ln3) / (ln3 - 1) = 22.281
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e^x = 3^(x-2)
Thank you qwertypoiu !e^x = 3^(x-2)
ln(e^x) = ln(3^(x-2)) .......taking ln on both sides...
x = (x-2)ln3 .......simplification, and dropping the power rule.
x = (ln3)x - 2ln3
2ln3 = (ln3 - 1)x
x = (2ln3) / (ln3 - 1) = 22.281
generally right angle triangle is used ..To find exact values of trigonometric functions such as sin and cos, which triangles are used (isosceles, equilateral or both)? And how are they used?
Yeah but what about the lengths?generally right angle triangle is used ..
Yeah but what about the lengths?
It's not in a question. I just wanna know how to calculate the exact angles, e.g, sin 30, 60 and 45 using triangles. Hope you understood what I meant!can u tell me the exact question ?
exact angles can be calculated from any type of triangle if the required data is given to calculate the exact angles..It's not in a question. I just wanna know how to calculate the exact angles, e.g, sin 30, 60 and 45 using triangles. Hope you understood what I meant!
Ok...so can you tell me whats the exact value of sin 30, with explanation? Sorry if am asking too many questions. It's just that trigo is a bit difficult!exact angles can be calculated from any type of triangle if the required data is given to calculate the exact angles..
Ok then. Thanks! This seems the only method.u can take the help of calculator to get exact value of sin30 which is 1/2 ..
There's something called Newton's Third Law.PLZ tell me that why does the tension changes its direction in part (II) ??
Thanks !There's something called Newton's Third Law.
It's famously known as "every action has an equal and opposite reaction"
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
When you are standing on the ground, on YOU, there are two forces. The earth pulls you down (weight), and the floor pushes you up (normal contact force). Note that these are NOT the two forces Newton talks about:
Action: earth pulls you. Reaction: You pull the earth.
Actions: ground pushes you up. Reaction: you push the ground down.
In simple words, when a string connects two objects A and B, there is tension in string acting on A towards B, and an opposite and equal tension acting on B towards A.
(i) f(x) = 4, so: 6 - 4cos(0.5x) = 4Help please?
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