Topic Details (Notes format)

How to Solve Exponential Equations

Subject: Mathematics

Book: Maths Mastery

Exponential equations have the variable in the exponent, such as 2^x = 8. One approach is to rewrite both sides using the same base. For example, 8 can be written as 2³, so 2^x = 2³ implies x = 3. In more complicated cases, you may take logarithms of both sides: If 5^x = 100, applying log yields x log(5) = log(100), so x = log(100)/log(5). Exponential equations govern growth phenomena, from population expansions to radioactive decay, making them central in biology, finance (compound growth), and physics. Mastering exponential solving ensures you can interpret and forecast exponential trends accurately.

Practice Questions

If a square has a perimeter of 64 cm, what is its area?

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What is the area of a circle with a diameter of 14 cm?

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If the radius of a circle is 7 cm, what is its circumference?

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If x = 2 and y = 3, what is the value of (x^2 + y^2)?

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If a number is divisible by 9, it is also divisible by which of the following?

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If the cost price of an item is Rs. 400 and the selling price is Rs. 500, what is the profit percentage?

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If x + y = 10 and xy = 21, what is the value of x³ + y³?

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What is the sum of the first 10 positive even numbers?

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A square is inscribed in a circle with a radius of 5 cm. What is the area of the square?

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If a:b = 3:4 and b:c = 5:6, what is a:c?

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