Really stuck on an easy questionintegral of 1/(2^x)

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In summary, to solve the integral of 1/(2^x), you can use the power rule for integration which states that the integral of x^n is (x^(n+1))/(n+1). In this case, n = -x. Therefore, the integral becomes (2^(-x))/(-x+1) + C. The steps for solving this integral involve using the power rule and the chain rule. The constant of integration, denoted as C, is a constant term that is added to the final answer. There are alternative methods for solving this integral, such as substitution, integration by parts, and the power rule with u-substitution. An example of a similar integral is the integral of 1/(3
  • #1
gnick
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Hi there!
I am stuck on how to work out the integral of 1/(2^x) and was hoping someone could guide me step by step to the answer? so confused and would really appreciate the help thanks!
 
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  • #2
Well
1/2^x=(1/2)^x
what is
((1/2)^x)'
?
 
  • #3
It might help you to recognize that [itex]1/2^x= 2^{-x}[/itex]. Also, [itex]2^{-x}= e^{ln(2^{-x})}= e^{(-ln(2)x)}[/itex].
 

Related to Really stuck on an easy questionintegral of 1/(2^x)

1. How do you solve the integral of 1/(2^x)?

To solve the integral of 1/(2^x), you can use the power rule for integration which states that the integral of x^n is (x^(n+1))/(n+1). In this case, n = -x. Therefore, the integral becomes (2^(-x))/(-x+1) + C.

2. Can you explain the steps for solving this integral?

First, use the power rule for integration which states that the integral of x^n is (x^(n+1))/(n+1). In this case, n = -x. Therefore, the integral becomes (2^(-x))/(-x+1). Then, use the chain rule to simplify the expression by multiplying by the derivative of the exponent, which is ln(2). Finally, add the constant of integration, C, to get the final answer of (2^(-x))/(-x+1) + C.

3. What is the value of the constant of integration in this integral?

The constant of integration, denoted as C, is a constant term that is added to the final answer of an indefinite integral. It can take any real value and is used to account for all possible solutions to the integral.

4. Are there any alternative methods for solving this integral?

Yes, there are several alternative methods for solving the integral of 1/(2^x). These include using substitution, integration by parts, and the power rule for integration with u-substitution. However, the power rule is the most straightforward and efficient method for this integral.

5. Can you provide an example of a similar integral to help understand this one better?

One example of a similar integral is the integral of 1/(3^x). The steps to solve this integral would be the same as the integral of 1/(2^x), except the constant of integration would be different. The final answer would be (3^(-x))/(-x+1) + C.

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