Give extra questions for chapter Arithmetic progression
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Here are a few questions that you would like to solve.
1.If the sum of the roots of the quadratic equation ax^2 + bx + c = 0 is equal to the sum of the squares of their reciprocals,then show that ab^2,ca^2,bc^2 are in A.P.
2.If the sides of a right angled triangle form an A.P. , then find the sines of the acute angles. [ Ans : Sines of acute angles are 3/4 and 4/5 ]
3.If a,b,c are in A.P., then show that 1 /( √b + √c ) , 1/(√c +√a ) ,1/ ( √a +√b)
are in A.P.
4.What is the sum of all two-digit numbers which leave remainder 5 when they are divided by 7. [ Ans : 702 ]
5.What is the sum of the series 1^2 - 2^2 + 3^2 - 4^2 + ........ + 99^2 - 100^2. [ Ans : ( - 5050 ) ]
☺☺☺☺☺☺☺☺☺
Here are a few questions that you would like to solve.
1.If the sum of the roots of the quadratic equation ax^2 + bx + c = 0 is equal to the sum of the squares of their reciprocals,then show that ab^2,ca^2,bc^2 are in A.P.
2.If the sides of a right angled triangle form an A.P. , then find the sines of the acute angles. [ Ans : Sines of acute angles are 3/4 and 4/5 ]
3.If a,b,c are in A.P., then show that 1 /( √b + √c ) , 1/(√c +√a ) ,1/ ( √a +√b)
are in A.P.
4.What is the sum of all two-digit numbers which leave remainder 5 when they are divided by 7. [ Ans : 702 ]
5.What is the sum of the series 1^2 - 2^2 + 3^2 - 4^2 + ........ + 99^2 - 100^2. [ Ans : ( - 5050 ) ]
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Smrithy2003:
sure
Ok bye
can you pls give ans at the side..not fully
give it in comments itself
Ok I'm adding it .
thank you
i will surely mark..but i didn't get the option..if it comes i will do it..
Hey, I have added answers in the answer .
oh.. thank you so much.. thank you
It's ok
Answered by
0
Answer:
formulas of lesson arithmetic progression
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