Q. Find the 7th term of the geometric sequence shown below.−10x6,10x11,−10x16,…Answer:
Find Common Ratio: To find the 7th term of a geometric sequence, we need to identify the common ratio (r) between consecutive terms. We can find the common ratio by dividing the second term by the first term.Calculation: r=−10x610x11Simplification: r=−x5
Calculate 7th Term: Now that we have the common ratio, we can find the 7th term a7 using the formula for the nth term of a geometric sequence: an=a1⋅r(n−1), where a1 is the first term and n is the term number.Calculation: a7=(−10x6)⋅(−x5)(7−1)Simplification: a7=(−10x6)⋅(−x5)6
Simplify Expression: Next, we simplify the expression for a7 by raising the common ratio to the 6th power.Calculation: a7=(−10x6)×(x30)Simplification: a7=−10x6+30Simplification: a7=−10x36
More problems from Find trigonometric functions using a calculator